Common use of Certificate No Clause in Contracts

Certificate No. R-1 Cut-off Date : August 1, 2004 First : September 25, 2004 Distribution Date Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity Trust 2004-7 Asset-Backed Certificates, Series 2004-7 Class R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any monthly distributions due to the Class R Certificates pursuant to a Master Servicing and Trust Agreement dated as of the Cut-Off Date specified above (the "Agreement") between GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.

Certificate No. R-1 9-A-1-[_] Cut-off Date Date: August October 1, 2004 First Distribution Date: September November 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2024 Pass-Through Rate: 5.25% Initial Certificate Principal Balance of this Certificate $[ ] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $25,404,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN 576434 XF 6 ISIN: US36242DEE94 GS US576434XF68 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset11 Mortgage Pass-Backed Through Certificates, Series 2004-7 11 Class R 9-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A.National Association, as Master Servicer master servicer (in such capacitycapxxxxx, the "Mastxx XxrvicerServicer") and securities ), trust administrator (in such capacity, the "Securities Trust Administrator") and JPMorgan Chase Banka custodian, U.S. Bank National Association, as custodiana custodian and as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 2-A-6-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: December 25, 2032 Pass-Through Rate: 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $7,600,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K MK 2 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 2-A-6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 2 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 1 Cut-off Date : August September 1, 2004 First Distribution Date : September October 25, 2004 Distribution Date Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity Trust 2004-7 8 Asset-Backed Certificates, Series 2004-7 8 Class R P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master Servicer, the to Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo BankFargo, N.A., as Master Servicer (in such capacity, the to "Mastxx XxrvicerMaster Serxxxxx") and securities administrator Securities Administrator (in such capacity, the to "Securities Administrator") and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee Securities Administrator for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkAdministrator. No transfer of a Certificate of this Class R Certificate shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Securities Administrator shall have received require the transferor to execute a representation letter transferor certificate (in substantially the form attached to the Trust Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Securities Administrator that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the transferee of such Certificate, acceptable to and in form and substance satisfactory 1933 Act or is being made pursuant to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer1933 Act, which representation letter Opinion of Counsel shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereetransferor. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.. * * *

Certificate No. R-1 Cut-off Date : August 1, 2004 First : September 25, 2004 Distribution Date Percentage Interest Initial Certificate Balance of this Certificate ("Denomination") : 100% $ Initial Certificate Balances of all Certificates of this Class : $ CUSIP : 36242D EE 9 ISIN Interest Rate : US36242DEE94 GS MORTGAGE SECURITIES CORPMaturity Date : INDYMAC MBS, INC. GSAA Home Equity Residential Asset Securitization Trust 2004200_-__ Mortgage Pass-7 Asset-Backed Through Certificates, Series 2004200_-__ Class A-7 Class R evidencing a percentage interest in the distributions allocable to the Class A-R Certificates with respect to a Trust Fund consisting primarily of a pool of conventional mortgage loans (the above"Mortgage Loans") secured by first liens on one- to four-referenced Classfamily residential properties. Distributions Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Accordingly, the Certificate Balance and is not entitled to distributions in respect of principal or interestat any time may be less than the Certificate Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Seller, the Master Servicer, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by IndyMac MBS, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, IndyMac Bank, F.S.B., as depositor seller and master servicer (the "DepositorSeller" or the "Master Servicer", as appropriate), and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the offices designated by the Trustee for such purposes Corporate Trust Office or the office or agency maintained by the Securities Administrator Trustee in New York, New York. No transfer of a Class A-R Certificate shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan ERISA or arrangement subject to Section 4975 of the Code or a plan subject to Similar LawCode, or a person acting on behalf of any such plan or arrangement nor or using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator Trustee or the Trust Fund. In Master Servicer, (ii) if the event purchaser is an insurance company, a representation that the purchaser is an insurance company which is purchasing such representation Certificates with funds contained in an "insurance company general account" (as such term is violated, defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60")) and that the purchase and holding of such Certificates are covered under PTCE 95-60 or (iii) in the case of any attempt is made to transfer to a plan or arrangement subject to Section 406 such Class A-R Certificate presented for registration in the name of ERISA or a an employee benefit plan subject to ERISA, or Section 4975 of the Code (or a plan subject to Similar Lawcomparable provisions of any subsequent enactments), or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement arrangement, or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Master Servicer to the effect that the purchase or holding of such Class A-R Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee or the Master Servicer to any such obligation in addition to those undertaken in this Agreement, which Opinion of Counsel shall not be an expense of the Trustee or the Master Servicer. Notwithstanding anything else to the contrary herein, any purported transfer of a Class A-R Certificate to or on behalf of an employee benefit plan subject to ERISA or arrangement, such attempted transfer or acquisition to the Code without the Opinion of Counsel satisfactory to the Trustee as described above shall be void and of no effect. Each Holder of this Class A-R Certificate shall will be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisionsrestrictions of the Agreement, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject including but not limited to the following provisions: restrictions that (i) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition transferred without delivery to the certificates required to be delivered to the Securities Administrator under Section 5.02(bTrustee of (a) a transfer affidavit of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form attached as Exhibit G to described in the Agreement, (iii) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must agree (A) to obtain require a Transfer Affidavit from any other Person transfer affidavit and to whom such Person attempts deliver a transfer certificate to Transfer its Ownership Interest this Class R Certificatethe Trustee as required pursuant to the Agreement, (Biv) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee each person holding or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of acquiring an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class A-R Certificate or must agree not to cause the Transfer of the transfer an Ownership Interest in this Class A-R Certificate to any other Person if it has actual knowledge that such Person the proposed transferee is not a Permitted Transferee and (ivv) any attempted or purported Transfer transfer of the any Ownership Interest in this Class A-R Certificate in violation of the provisions herein shall such restrictions will be absolutely null and void and shall will vest no rights in the purported Transfereetransferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 2-A-9-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: December 25, 2032 Pass-Through Rate: 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $50,500,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K MN 6 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 2-A-9 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 2 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 2-A-1-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: December 25, 2032 Pass-Through Rate: 3.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $99,624,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K ME 6 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 2-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 2 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 1-A-1-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: November 25, 2017 Pass-Through Rate: 5.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $352,108,667 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K LZ 0 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 1-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 1 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August October 1, 2004 2002 First : September 25, 2004 Distribution Date : November 20, 2002 Initial Certificate Balance of this Certificate ("Denomination") : $2,378,690 Initial Certificate Balances of all Certificates of this Class : $2,378,690 Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 36228F JU 1 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 20042002-7 AssetWF Mortgage Pass-Backed Through Certificates, Series 20042002-7 WF Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp., as depositor (the "Depositor"), and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Trust Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a person acting on behalf trustee of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee, which Opinion of Counsel shall not be an expense of the Trustee or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not result in the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be the Trust Fund being deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, "plan assets" and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator prohibited transaction provisions of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, ERISA and the Securities Administrator shall Code and will not register subject the Transfer of this Certificate unless, Trustee to any obligation in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest those expressly undertaken in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate Agreement or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereeliability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 1-A-2-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K MA 4 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 1 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 1-A-5-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: November 25, 2017 Pass-Through Rate: 5.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $1,800,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K MD 8 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 1-A-5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 1 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August With respect to any Mortgage Loan, the later of (i) the date of origination of such Mortgage Loan or (ii) July 1, 2004 2000 First Distribution Date : September August 25, 2004 Distribution Date Percentage Interest 2000 Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$79,000,000.00 Original Class Certificate Principal Balance of this Class : $79,000,000.00 Percentage Interest : 100.00% Pass-Through Rate : Variable CUSIP : 36242D EE 9 ISIN 68389F __ _ Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity A Assumed Maturity Date : September 2030 Option One Mortgage Loan Trust 20042000-7 3 Asset-Backed Certificates, Series 20042000-7 3 Class R A evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to the Trust consisting of first lien, adjustable rate mortgage loans (the "Mortgage Loans") OPTION ONE MORTGAGE ACCEPTANCE CORPORATION, as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class A Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This A Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class A Certificate (obtained by dividing the Denomination of any this Class A Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Option One Mortgage Acceptance Corporation (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above July 1, 2000 (the "Agreement") between GS among the Depositor, Option One Mortgage Securities Corp.Corporation, as depositor master servicer (the "DepositorMaster Servicer"), Deutsche and Wells Fargo Bank National Trust CompanyMinnesota, N.A., a xxxxxnal banking association, as trustee Trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class A Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class A Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class A Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class A Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 2-A-11-[__] Cut-off Date Date: August October 1, 2004 2002 First Distribution Date: September November 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: December 25, 2032 Pass-Through Rate: 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $13,121,000 of this Class: 100% CUSIP CUSIP: 36242D EE 55265K MQ 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 AssetMortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 2-A-11 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 2 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 A-1- Cut-off Date Date: July 1, 2002 First Distribution Date: August 126, 2004 First : September 25, 2004 Distribution Date Percentage Interest 2002 Initial Principal Balance of this Certificate ("Denomination"): $296,163,000 Initial Certificate Principal Balance of Class A-1 Certificates: $296,163,000 Latest Possible Maturity Date: October 25, 2032 CUSIP: 07384Y EM4 Interest Rate: For each Distribution Date, the lesser of (i) : 100One-Month LIBOR plus, for any Distribution Date (a) on or prior to the Optional Termination Date, 0.33% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE and (b) thereafter, 0.66% and (ii) the applicable Interest Rate Cap. BEAR STEARNS ASSET BACKED SECURITIES CORP. GSAA Home Equity Trust 2004TRUST 2002-7 Asset2 Xxset-Backed Certificates, Series 20042002-7 Class R 2 evidencing a percentage interest in the distributions allocable to the Class of Certificates of indicated on the above-referenced Class. Distributions in respect first page of this Certificate is distributable monthly with respect to a Trust Fund consisting primarily of a pool of conventional, fixed- and adjustable-rate mortgage loans (the "Mortgage Loans") secured by first and second liens on one- to four-family residential properties (the "Trust Assets"). The Certificate Principal Balance of this Certificate at any time may be less than the Initial Certificate Principal Balance of this Certificate as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Seller, the Master Servicer, the Securities Administrator Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor most of the Mortgage Loans Trust Assets are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the same Class) in certain monthly distributions due with respect to a Trust Fund consisting of the Class R Certificates Trust Assets deposited by Bear Stearns Asset Backed Securities, Inc. (the "Depositor"). The Xxxxx Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above July 1, 2002 (the "Agreement") between GS among the Depositor, EMC Mortgage Securities Corp.Corporation as seller and master servicer (in its capacity as seller, as depositor (the "DepositorSeller" and in its capacity as master servicer, the "EMC Master Servicer"), Deutsche Wells Fargo Bank Minnesota, National Trust CompanyAssociation as master sxxxxxer and securities administrator (in its capacity as master servicer, the "Wells Master Servicer" and in its capacity as securities admxxxxxrator, the "Securities Administrator" and Bank One, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as ). The EMC Master Servicer (in such capacity, and the Wells Master Servicer are together referred to as the "Mastxx XxrvicerMastex Xxxvicers" and individually sometimes referred to as a ") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian. Master Servicer." To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution Pursuant to the terms of the proceeds of any remaining assets of the Trust Fund Agreement, a distribution will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (the "Distribution Date"), commencing on the first Distribution Date specified above, to the Person in whose name this Certificate is registered on the applicable Record Date in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to Holders of the Certificates of the Class indicated on the first page of this certificate on such Distribution Date pursuant to Section 5.04 of the Agreement. Distributions on this Certificate shall be made by wire transfer of immediately available funds to the account of the registered Holder hereof at a bank or other entity having appropriate facilities therefor, if such Certificateholder shall have so notified the Trustee in writing at least five Business Days prior to the related Record Date or, if not, by check mailed by first class mail to the address of such Certificateholder appearing in the Certificate Register. The final distribution on each Certificate will be made in like manner, but only upon presentment and surrender of this Class R such Certificate at the offices designated by Corporate Trust Office of the Trustee for or such purposes or other location specified in the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee notice to Certificateholders of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereefinal distribution. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless the certificate of authentication hereon has been manually authenticated executed by an authorized signatory officer of the Securities Administrator.Trustee. * * *

Certificate No. R-1 1-A-1-[_] Cut-off Date Date: August October 1, 2004 First Distribution Date: September November 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2034 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[ ] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $70,640,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN 576434 WV 2 ISIN: US36242DEE94 GS US576434WV28 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset11 Mortgage Pass-Backed Through Certificates, Series 2004-7 11 Class R 1-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A.National Association, as Master Servicer master servicer (in such capacitycapxxxxx, the "Mastxx XxrvicerServicer") and securities ), trust administrator (in such capacity, the "Securities Trust Administrator") and JPMorgan Chase Banka custodian, U.S. Bank National Association, as custodiana custodian and as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 Cut-off Date : August May 1, 2004 2001 First Distribution Date : September June 25, 2004 Distribution Date Percentage Interest 2001 Initial Notional Amount of this Certificate ("Denomination") : 100% Initial Class Notional Amount of all Certificates of this Class : Percentage Interest : CUSIP : 36242D EE 9 ISIN Pass-Through Rate : US36242DEE94 GS Maturity Date : CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP. GSAA Home Equity CSFB ABS Trust 2004Series 2001-7 AssetHE12 CSFB Mortgage Pass-Backed Through Certificates, Series 20042001-7 HE12 Class R A-IO evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced ClassClass with respect to a Trust Fund consisting primarily of a pool of fixed rate and adjustable rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties. Distributions in respect of this Certificate is distributable monthly Credit Suisse First Boston Mortgage Securities Corp., as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. Depositor This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Seller, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] CEDE & CO. is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Credit Suisse First Boston Mortgage Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS among the Depositor, DLJ Mortgage Securities Corp.Capital, Inc., as depositor seller (the in such capacity, "DepositorSeller"), Deutsche Calmco Servicing L.P., as servicer (in such capacity, "Servicer") and U.S. Bank National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date Date: August September 1, 2004 2001 First Distribution Date: September October 25, 2004 Distribution Date Percentage Interest 2001 Pass-Through Rate: Floating in accordance with the Agreement Initial Certificate Principal Balance of this Certificate ("Denomination") ): $ Initial Certificate Principal Balances of all Certificates of this Class: 100% CUSIP $100 CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 576433 AB 2 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ADJUSTABLE RATE MORTGAGES TRUST 2001-7 Asset1 Mortgage Pass-Backed Through Certificates, Series 20042001-7 Class R 1 evidencing a percentage interest in the distributions allocable to the Class A-R Certificates with respect to a Trust Fund consisting primarily of a pool of conventional loans (the above"Mortgage Loans") secured by first liens on one- to four-referenced Class. Distributions family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above (obtained by dividing the Denomination of any this Certificate by the aggregate initial Class Principal Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, Wxxxx Fargo Home Mortgage, Inc., as depositor originator and servicer (the "DepositorServicer"), Deutsche Wxxxx Fargo Bank National Minnesota, N.A., as trust administrator (the "Trust CompanyAdministrator"), and The Chase Manhattan Bank, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the offices designated by Corporate Trust Office of the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Class A-R Certificate shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or nor a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator Trustee or the Trust FundServicer. In Notwithstanding anything else to the event that such representation is violated, contrary herein any purported transfer of a Class A-R Certificate to or any attempt is made to transfer to a plan or arrangement subject to Section 406 on behalf of ERISA or a an employee benefit plan subject to Section 4975 of ERISA, the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition Law shall be void and of no effect. Each Holder of this Class A-R Certificate shall will be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisionsrestrictions of the Agreement, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject including but not limited to the following provisions: restrictions that (i) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition transferred without delivery to the certificates required to be delivered to the Securities Administrator under Section 5.02(bTrustee of (a) a transfer affidavit of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form attached as Exhibit G to described in the Agreement, (iii) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must agree (A) to obtain require a Transfer Affidavit from any other Person transfer affidavit and to whom such Person attempts deliver a transfer certificate to Transfer its Ownership Interest this Class R Certificatethe Trustee as required pursuant to the Agreement, (Biv) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee each person holding or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of acquiring an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class A-R Certificate or must agree not to cause the Transfer of the transfer an Ownership Interest in this Class A-R Certificate to any other Person if it has actual knowledge that such Person the proposed transferee is not a Permitted Transferee and (ivv) any attempted or purported Transfer transfer of the any Ownership Interest in this Class A-R Certificate in violation of the provisions herein shall such restrictions will be absolutely null and void and shall will vest no rights in the purported Transfereetransferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 2-A-1-[_] Cut-off Date Date: August April 1, 2004 First Distribution Date: September May 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: May 25, 2019 Pass-Through Rate: 5.00% Initial Certificate Principal Balance of this Certificate ("Denomination") ): $[ ] Initial Certificate Principal Balances of all Certificates of this Class: 100% CUSIP $75,053,000 CUSIP: 36242D EE 9 ISIN 57643M BP 8 ISIN: US36242DEE94 GS US57643MBP86 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ASSET SECURITIZATION TRUST 2004-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 2004-7 Class R 5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer master servicer (in such capacity, the "Mastxx Xxrvicer") and securities ), trust administrator (in such capacity, the "Securities Trust Administrator") and JPMorgan Chase a custodian, U.S. Bank National Association, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as custodiantrustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 X-1 Cut-off Date : August July 1, 2004 First Distribution Date : September August 25, 2004 Distribution Date Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPMORGAN STANLEY ABS CAPITAL I INC. GSAA Home Equity Morgan Stanley ABS Cxxxxxx X Xxx. Trust 2004-7 AssetNC6 Mortgagx Xxxx-Backed Xxxxxxx Certificates, Series 2004-7 NC6 Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicers, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Morgan Stanley Mortgage Capital Inc., is the registered owner of the Percentage Interest specified above Pexxxxxxgx Xxxxxest evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among Morgan Stanley ABS Capital I Inc., as depositor (the "Depositor"), Chasx Xxxxaxxxx Xxrtgage Corporation, as servicer, HomEq Servicing Corporation, as servicer, New Century Mortgage Corporation, as servicer (collectively, the "Servicers"), NC Capital Corporation, as responsible party (the "Responsible Party"), and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the office or agency maintained by the Securities Administrator in New York, New Yorknotice to Certificateholders. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a person acting on behalf trustee of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a other person acting on behalf of any such plan or arrangement or using the assets of any such plan plan's or arrangement's assets, such attempted transfer or acquisition shall be void and an Opinion of no effect. Each Holder of this Class R Certificate shall be deemed by Counsel satisfactory to the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, Trustee and the rights Servicers, which Opinion of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject Counsel shall not be an expense of the Trustee, the Servicers or the Trust Fund, addressed to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted TransfereeTrustee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to effect that the Securities Administrator under Section 5.02(b) purchase or holding of the Agreement, the Securities Administrator shall have been furnished with such Certificate will not constitute or result in a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, non-exempt prohibited transaction within the meaning of an applicable income tax treatyERISA, Section 4975 of such Person the Code or any other U.S. Person Similar Law and (D) will not subject the Trustee or the Servicers to Transfer the Ownership Interest any obligation in addition to those expressly undertaken in this Class R Certificate Agreement or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereeliability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 7-A-9-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $22,525,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KZ 1 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 9-A-1-[_] Cut-off Date Date: August June 1, 2004 First Distribution Date: September July 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: July 25, 2034 Pass-Through Rate: 5.75% Initial Certificate Principal Balance of this Certificate $[ ] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $40,000,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN 576434 SM 7] ISIN: US36242DEE94 GS US576434SM74 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 2004-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Servxxxx"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 1-A-1-[_] Cut-off Date Date: August June 1, 2004 First Distribution Date: September July 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: July 25, 2024 Pass-Through Rate: 5.25% Initial Certificate Principal Balance of this Certificate $[ ] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $59,000,000 of this Class: 100% CUSIP CUSIP: 36242D EE 576434 SC 9 ISIN ISIN: US36242DEE94 GS US576434SC92 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 2004-7 6 Class R 1-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Servxxxx"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 7-A-2-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $67,866,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KS 7 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 4-A-6-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $11,533,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KJ 7 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 4 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 7-A-14-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $7,384,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K LE 7 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 A-2-1 Cut-off Date Date: August December 1, 2004 2001 First Distribution Date: September January 25, 2004 Distribution Date Percentage Interest 2002 Pass-Through Rate: 6.50% Initial Certificate Principal Balance of this Certificate $34,171,000 ("Denomination") ): Initial Certificate Principal Balances of all Certificates $34,171,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 269243 AB 7 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. E*TRADE BANK MORTGAGE-BACKED SECURITIES CORP. GSAA Home Equity Trust 2004TRUST 2001-7 Asset2 Mortgage Pass-Backed Through Certificates, Series 20042001-7 2 Class R A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of a pool of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the Denomination of any this Certificate by the aggregate initial Class Principal Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, Wells Fargo Bank Xxxxxsota, N.A., as depositor master servicer (the "DepositorServicer"), Deutsche Bank National Trust Companyand JPMorgan Chase Bank, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 1-A-1-[_] Cut-off Date Date: August September 1, 2004 First Distribution Date: October 25, 2004 Last Scheduled Distribution Date: September 25, 2004 Distribution Date Percentage Interest 2019 Pass-Through Rate: 4.50% Initial Certificate Principal Balance of this Certificate ("Denomination") ): $[_______________] Initial Certificate Principal Balances of all Certificates of this Class: 100% CUSIP $36,000,000 CUSIP: 36242D EE 9 ISIN 576434 VU 5 ISIN: US36242DEE94 GS US576434VU 53 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset10 Mortgage Pass-Backed Through Certificates, Series 2004-7 10 Class R 1-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, National Association, as master servicer (in such capxxxxx, the "Servicer"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 Cut-off Date : August December 1, 2004 2006 First Distribution Date : September January 25, 2004 Distribution Date 2007 Percentage Interest of this Certificate ("Denomination") : 100[_____]% CUSIP : 36242D EE 9 36245T AW 5 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPUS36245TAW53 XX XXXXXXXX XXXXXXXXXX XXXX. GSAA Home Equity GSAMP Trust 20042006-7 AssetFM3 Mortgage Pass-Backed Through Certificates, Series 20042006-7 FM3 Class R P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Servicer, the Securities Administrator Administrator, the Sponsor, the Responsible Party or the Trustee or any other party to the Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement Agreement, dated as of the Cut-Off off Date specified above (the "Agreement") between ), among GS Mortgage Securities Corp., as depositor (the "Depositor"), Fremont Investment & Loan, as responsible party (in such capacity, the "Responsible Party") and as servicer (in such capacity, the "Servicer"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer master servicer (in such capacity, the "Mastxx XxrvicerMaster Servicer") and securities xxxxxities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian"). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee Securities Administrator for such purposes or the office or agency maintained by the Securities Administrator in New York, New Yorkpurpose. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Securities Administrator shall require the transferor to execute a transferor certificate (in substantially the form attached to the Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Securities Administrator that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the TrusteeSecurities Administrator, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to any materially similar provisions of applicable federal, state or local law ("Similar Law"), or a person acting on behalf of any such or investing plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported TransfereeAdministrator. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.. ***

Certificate No. R-1 4-A-1-[__] Cut-off Date Date: August 1, 2004 2002 First Distribution Date: September 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: September 25, 2032 Pass-Through Rate: 6.500% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $151,299,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K HD 4 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 20042002-7 5 Class R 4-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 4 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August September 1, 2004 2005 First Distribution Date : September October 25, 2004 Distribution Date 2005 Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 362341 RC 5 ISIN : US36242DEE94 US362341RC58 GS MORTGAGE SECURITIES CORP. GSAA Home Equity FFMLT Trust 20042005-7 AssetFF8 Mortgage Pass-Backed Through Certificates, Series 20042005-7 FF8 Class R P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between ), among GS Mortgage Securities Corp., as depositor (the "Depositor"), National City Home Loan Services, Inc., as servicer (the "Servicer"), and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New Yorkpurpose. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of any such or investing plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported TransfereeTrustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 Cut-off Date : August 1, 2004 First Distribution Date : September 25, 2004 Distribution Date Percentage Interest of : 100% this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPMORGAN STANLEY ABS CAPITAL I INC. GSAA Home Equity Trust Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 AssetHE6 Mortgage Xxxx-Backed CertificatesXhxxxxx Xertificates, Series 2004-7 HE6 Class R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Morgan Stanley & Co. Incorporated is the registered owner of the Percentage Interest Percenxxxx Xnxxxxxx specified above of any monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among Morgan Stanley ABS Capital I Inc., as depositor (the "Depositor"), Chasx Xxxxaxxxx Xxrtgage Corporation, as servicer, Countrywide Home Loans Servicing LP, as servicer, HomEq Servicing Corporation, as servicer, Accredited Home Lenders, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the office or agency maintained by the Securities Administrator in New York, New Yorknotice to Certificateholders. No transfer of a Class R Certificate shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator Trustee, the Servicers or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator Trustee under Section 5.02(b) of the Agreement, the Securities Administrator Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 5-A-1-[_] Cut-off Date Date: August May 1, 2004 First Distribution Date: September June 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: June 25, 2019 Pass-Through Rate: 4.75% Initial Certificate Principal Balance of this Certificate ("Denomination") ): $[ ] Initial Certificate Principal Balances of all Certificates of this Class: 100% CUSIP $26,000,000 CUSIP: 36242D EE 9 ISIN 576434 RK 2 ISIN: US36242DEE94 GS US576434RK28 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 2004-7 Class R 5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Servxxxx"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 7-A-16-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $11,928,500 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K LG 2 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 7-A-6-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $7,150,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KW 8 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 CutA -1-off Date 1 CUSIP No: August 1, 2004 First : September 25, 2004 Distribution Date Percentage Interest of this 805564 This Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity Trust 2004-7 Asset-Backed Certificates, Series 2004-7 Class R evidencing evidences a percentage beneficial ownership interest in the distributions allocable to the Certificates a Trust consisting primarily of the above-referenced Class. Distributions in respect a pool of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerMortgage Loans (collectively, the Securities Administrator or the Trustee referred to below or any of their respective affiliates“Mortgage Loans”) formed and sold by SAXON ASSET SECURITIES COMPANY THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN SAXON ASSET SECURITIES COMPANY, THE MASTER SERVICER, ANY SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentalityNEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES. This certifies that [_____________________] The Registered Holder named above is the registered owner of the Percentage Interest specified calculated as set forth below in the above mentioned Class of any monthly distributions due to Certificates issued by the Class R Certificates Trust (the “Trust”) created pursuant to a Master Pooling and Servicing and Trust Agreement Agreement, dated as of the Cut-Off Date specified above July 1, 2002 (the "“Pooling and Servicing Agreement") between GS Mortgage Securities Corp., as depositor (the "Depositor"”), Deutsche Bank National Trust Companyamong Saxon Asset Securities Company (herein called the “Depositor,” which term includes any successor entity under the Pooling and Servicing Agreement), as trustee (the "Trustee") and custodianSaxon Mortgage, Wells Fargo Bank, N.A.Inc., as Master Servicer (in such capacityServicer, the "Mastxx Xxrvicer") and securities administrator (in such capacitySaxon Mortgage Services, the "Securities Administrator) and JPMorgan Chase BankInc., as custodianServicer, and Deutsche Bank Trust Company Americas, as Trustee, a summary of certain of the pertinent provisions of which is set forth herein. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Pooling and Servicing Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, Pooling and Servicing Agreement to which Pooling and Servicing Agreement the Holder of this Certificate Certificate, by virtue of the acceptance hereof hereof, assents and by which such Holder is bound. Any distribution This Certificate is one of a duly authorized issue of Certificates designated as Mortgage Loan Asset Backed Certificates, Series 2002-2 (herein called the “Certificates”) and represents a Percentage Interest in the above mentioned Class of Certificates equal to the quotient, expressed as a percentage, obtained by dividing the Denomination of this Certificate specified above by the Initial Principal Balance specified above of the proceeds above mentioned Class of Certificates. The Certificates are issued in multiple Classes designated as specifically set forth in the Pooling and Servicing Agreement. The Certificates will evidence in the aggregate 100% of the beneficial ownership of the Trust. To the extent and subject to the limitations set forth in the Pooling and Servicing Agreement, the Person in whose name this Certificate is registered at the close of business on the last Business Day of the month immediately preceding the month of such distribution (the “Record Date”) is entitled to receive an amount equal to the product of such Person’s Percentage Interest and the Distribution Amount (as defined in the Pooling and Servicing Agreement) with respect to the above mentioned Class of Certificates on the 25th day of each month or, if such 25th day is not a Business Day, the next succeeding Business Day (each a “Distribution Date”), commencing in August 2002. All amounts distributable with respect to this Certificate are payable in the coin or currency of the United States of America as at the time of payment is legal tender for the payment of public and private debts. The Certificates are limited in right of payment to certain collections and recoveries respecting the Mortgage Loans, all as more specifically set forth in the Pooling and Servicing Agreement. As provided in the Pooling and Servicing Agreement, withdrawals from the Distribution Account and related accounts shall be made from time to time for purposes other than distributions to Holders of the Certificates, such purposes including reimbursement of Advances made, or certain expenses incurred, with respect to the Mortgage Loans and administration of the Trust Fund. So long as this Certificate is registered in the name of a clearing agency or its nominee, the Paying Agent will make distributions on this Certificate by wire transfer of immediately available funds to the Clearing agency or its nominee. Otherwise, all distributions under the Pooling and Servicing Agreement will be made by the Paying Agent either (i) by check mailed to the address of the Holder as it appears on the Certificate Register on the related Record Date or (ii) upon request to the Paying Agent in writing by the Record Date immediately prior to the Distribution Date of any Holder of Certificates of this Class having an aggregate initial principal amount equal to or in excess of $1,000,000, by wire transfer of immediately available funds to the account of such Holder. A fee may be charged by the Paying Agent to a Certificateholder for any payment made by wire transfer. Notwithstanding the above, the final distribution on this Certificate will be made after due notice by the Paying Agent of a pendency of such distribution and only upon presentation and surrender of this Certificate at its principal Corporate Trust Office or such other offices or agencies appointed by the Paying Agent for that purpose and such other locations provided in the Pooling and Servicing Agreement. The Trustee will duly and punctually make distributions with respect to this Certificate in accordance with the terms hereof and the Pooling and Servicing Agreement. Amounts properly withheld under the Code by any Person from a distribution to any Holder shall be considered as having been distributed to such Holder for all purposes of the Pooling and Servicing Agreement. The Pooling and Servicing Agreement permits, with certain exceptions therein provided, the amendment thereof and the modification of the rights and obligations of the Depositor and the Trustee and the rights of the Holders of the Certificates under the Pooling and Servicing Agreement at any time by the Depositor, the Master Servicer and the Trustee with consent of the Holders of Certificates entitled to at least 66% of the Voting Rights. Any such consent by the Holder of this Certificate shall be conclusive and binding on such Holder and upon all future Holders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange hereof or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Pooling and Servicing Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Holders of any of the Certificates. As provided in the Pooling and Servicing Agreement and subject to any limitations on transfer of this Certificate by a clearing agency or its nominee and certain limitations set forth in the Pooling and Servicing Agreement, the transfer of this Certificate is registerable in the Certificate Register upon surrender of this Certificate for registration of transfer at the principal Corporate Trust Office of the Trustee or such other offices or agencies appointed by the Trustee for that purpose and such other locations provided in the Pooling and Servicing Agreement, duly endorsed by or accompanied by an assignment in the form below or other written instrument of transfer in form satisfactory to the Trustee and duly executed by the Holder hereof or such Holder’s attorney duly authorized in writing, and thereupon one or more new Certificates of the same Class in the same aggregate principal balance will be issued to the designated transferee or transferees. Subject to the terms of the Pooling and Servicing Agreement, the Certificates of this Class will be registered as one or more certificates held by a clearing agency or its nominee and beneficial interests will be held by Beneficial Owners through the book-entry facilities of such Clearing agency or its nominee in minimum denominations of $25,000 and integral multiples of $1,000 in excess thereof. As provided in the Pooling and Servicing Agreement and subject to certain limitations therein set forth, this Certificate is exchangeable for a new Certificate of the same Class in the same denomination. No service charge will be made for any such registration of transfer or exchange, but the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any transfer or exchange of Certificates. The Depositor, the Master Servicer, the Trustee and the Paying Agent and any agent of the Depositor, the Master Servicer, the Trustee and the Paying Agent may treat the Person in whose name this Certificate is registered as the owner hereof for all purposes, and none of the Depositor, the Master Servicer, the Trustee or any such agent shall be affected by notice to the contrary. The Pooling and Servicing Agreement provides that the obligations created thereby will terminate upon the payment to the Holders of all Certificates of all amounts held by the Trustee and required to be paid to such Holders pursuant to the Pooling and Servicing Agreement or the last to occur of (a) the final payment or other liquidation (or any advance made with respect thereto) of the last Mortgage Loan in the Trust Fund, (b) the disposition of all property acquired in respect of any Mortgage Loan remaining assets in the Trust Fund and (c) at any time when a qualified liquidation of the Trust Fund will be made only upon presentment is effected as described in the Pooling and surrender of this Class R Certificate at Servicing Agreement. The Pooling and Servicing Agreement also provides that (i) on and after the offices designated by Initial Optional Termination Date, the Trustee for such purposes or Master Servicer may purchase the office or agency maintained by Mortgage Loans then remaining in the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless Trust Fund and apply the Securities Administrator shall have received a representation letter from the transferee proceeds of such Certificatesale to effect early retirement of the Certificates and (ii) under certain circumstances relating to the qualification of any REMIC as a REMIC under the Code the Mortgage Loans may be sold, acceptable to and in form and substance satisfactory to thereby effecting the early retirement of the Certificates. Unless the certificate of authentication hereon has been executed by the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISAby manual signature, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Pooling and Servicing Agreement or be valid for any purpose unless manually authenticated by an authorized signatory purpose. THIS CERTIFICATE AND THE POOLING AND SERVICING AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK. The Trustee has executed this Certificate on behalf of the Securities AdministratorTrust not in its individual capacity but solely as Trustee under the Pooling and Servicing Agreement, and the Trustee shall be liable hereunder only in respect of the assets of the Trust.

Certificate No. R-1 1 Cut-off Date : August 1, 2004 First Distribution Date : September 2527, 2004 Distribution Date Percentage Interest Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$ 15,594,000.00 Original Class Certificate Principal Balance of this Class : $ 15,594,000.00 Percentage Interest : 100.00% Pass-Through Rate : Variable CUSIP : 36242D EE 317350 BC 9 ISIN Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity II-A3 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-7 2 Asset-Backed Certificates, Series 2004-7 2 Class R II-A3 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to the Trust consisting of first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class II-A3 Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This II-A3 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class II-A3 Certificate (obtained by dividing the Denomination of any this Class II-A3 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Financial Asset Securities Corp. (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above August 1, 2004 (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, HomEq Servicing Corporation, as depositor servicer (the "DepositorServicer"), and Deutsche Bank National Trust Company, a national banking association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class II-A3 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class II-A3 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class II-A3 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class II-A3 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 [1] Cut-off Date Date: August December 1, 2004 First Distribution Date: September January 25, 2004 2005 Last Scheduled Distribution Date Percentage Interest Date: August 25, 2032 Pass-Through Rate: [________]% [Initial Certificate Principal Balance of this Certificate ("Denomination") ):] $[____________] [Initial Certificate Principal Balances of all Certificates of this Class:] $[____________] CUSIP: 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS [_____________] MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR SEASONED SECURITIZATION TRUST 2004-7 Asset2 Mortgage Pass-Backed Through Certificates, Series 2004-7 2 Class R A-[___] evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of five classes of previously issued mortgage pass-through certificates representing a senior ownership interest in a pool of conventional mortgage loans secured by first liens on one- to four-family residential properties (the "TRUST ASSETS") Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans Trust Assets are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] CEDE & CO. is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Trust Assets deposited by Mortgage Asset Securitization Transactions, Inc. (the "DEPOSITOR"). The Trust Fund was created pursuant to a Master Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "AgreementAGREEMENT") between GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") Depositor and custodian, Wells Xxxxx Fargo Bank, N.A., as Master Servicer trustee (in such capacity, the "Mastxx XxrvicerTRUSTEE") and as securities administrator (in such capacity, intermediary. Distributions on this Certificate will be made primarily from collections on the "Securities Administrator) and JPMorgan Chase Bank, as custodianTrust Assets pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 3-A-1-[__] Cut-off Date Date: August 1, 2004 2002 First Distribution Date: September 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: September 25, 2017 Pass-Through Rate: 6.000% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $233,970,000 of this Class: 100% CUSIP CUSIP: 36242D EE 55265K GY 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 20042002-7 5 Class R 3-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 3 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 5-A-27-[__] Cut-off Date Date: August 1, 2004 2002 First Distribution Date: September 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: September 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $52,000,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K JG 5 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 20042002-7 5 Class R 5-A-27 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 5 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 5-A-5-[__] Cut-off Date Date: August 1, 2004 2002 First Distribution Date: September 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: September 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $6,306,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K HJ 1 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 20042002-7 5 Class R 5-A-5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 5 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August December 1, 2004 2002 First : September 25, 2004 Distribution Date : January 20, 2003 Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN 36228F LE4 ISIN: US36242DEE94 : US63228FLE42 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 20042002-7 AssetHE2 Mortgage Pass-Backed Through Certificates, Series 20042002-7 HE2 Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above December 1, 2002 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank Litton Loan Servicing LP, as servicer (the "Servicer"), and Deutscxx Xxxk National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a person acting on behalf trustee of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not result in the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be the Trust Fund being deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, "plan assets" and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator prohibited transaction provisions of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, ERISA and the Securities Administrator shall Code and will not register subject the Transfer of this Certificate unless, Trustee or the Servicer to any obligation in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest those expressly undertaken in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate Agreement or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereeliability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 5-A-1-[_] Cut-off Date Date: August April 1, 2004 First Distribution Date: September May 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: April 25, 2019 Pass-Through Rate: 5.50% Initial Certificate Principal Balance of this Certificate ("Denomination") ): $[ ] Initial Certificate Principal Balances of all Certificates of this Class: 100% CUSIP $44,310,000 CUSIP: 36242D EE 9 ISIN 576434 QB 3 ISIN: US36242DEE94 GS US576434QB38 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset4 Mortgage Pass-Backed Through Certificates, Series 2004-7 4 Class R 5-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Servxxxx"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 1 Cut-off Date : August 1, 2004 First Distribution Date : September 2527, 2004 Distribution Date Percentage Interest Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$ 10,581,000.00 Original Class Certificate Principal Balance of this Class : $ 10,581,000.00 Percentage Interest : 100.00% Pass-Through Rate : Variable CUSIP : 36242D EE 9 ISIN 317350 BK 1 Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity M-7 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-7 2 Asset-Backed Certificates, Series 2004-7 2 Class R M-7 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to the Trust consisting of first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class M-7 Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This M-7 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class M-7 Certificate (obtained by dividing the Denomination of any this Class M-7 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Financial Asset Securities Corp. (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above August 1, 2004 (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, HomEq Servicing Corporation, as depositor servicer (the "DepositorServicer"), and Deutsche Bank National Trust Company, a national banking association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class M-7 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class M-7 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of this Certificate to a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement Plan subject to Section 406 of ERISA, a plan ERISA or arrangement subject to Section 4975 of the Code Code, any Person acting, directly or a plan subject to Similar Lawindirectly, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, Plan or any attempt is made person using Plan Assets to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of acquire this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest made except in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under accordance with Section 5.02(b5.02(d) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class M-7 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class M-7 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 4-A-1-[_] Cut-off Date Date: August May 1, 2004 First Distribution Date: September June 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: July 25, 2019 Pass-Through Rate: 5.50% Initial Certificate Principal Balance of this Certificate $[_________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $37,000,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN 576434 RJ 5 ISIN: US36242DEE94 GS US576434RJ54 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 2004-7 Class R 5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Servxxxx"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 Cut-off Date : August December 1, 2004 2005 First : September 25, 2004 Distribution Date : January 27, 2006 Percentage Interest of this Certificate ("Denomination") : 100[__]% CUSIP : 36242D EE 9 ISIN 362341 M9 7 ISIN: US36242DEE94 : US362341M978 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 20042005-7 AssetWMC3 Mortgage Pass-Backed Through Certificates, Series 20042005-7 WMC3 Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Purchaser, WMC or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above December 1, 2005 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank Litton Loan Servicing LP, as servicer (the "Servicer"), Wells Fargx Xxxx, N.A., as custodian (the "Custodian"), and Deutscxx Xxnk National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the office or agency maintained by the Securities Administrator in New York, New Yorknotice to Certificateholders. No transfer of a Certificate of this Class R Certificate shall be made unless such disposition is exempt from the registration requirements of the Securities Administrator shall have received a representation letter from Act of 1933, as amended (the transferee of "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such Certificate, acceptable to and in form and substance satisfactory to laws. In the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf event of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which representation letter Opinion of Counsel shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereetransferor. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.Trustee. ***

Certificate No. R-1 Cut-off Date : August 1, 2004 First : September 25, 2004 Distribution Date Percentage Interest Initial Certificate Balance of this Certificate ("Denomination") : 100% $ Initial Certificate Balances of all Certificates of this Class : $ CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPCWABS, INC. GSAA Home Equity Trust 2004Mortgage Pass-7 Asset-Backed Through Certificates, Series 2004-7 Class R 199_-__ evidencing a percentage interest in the distributions allocable to the Class A-R Certificates with respect to a Trust Fund consisting primarily of a pool of conventional loans (the above"Mortgage Loans") secured by first liens on one- to four-referenced Class. Distributions family residential properties CWABS, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Accordingly, the Certificate Balance and is not entitled to distributions in respect of principal or interestat any time may be less than the Certificate Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Seller, the Master Servicer, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above (obtained by dividing the Denomination of any this Certificate by the aggregate Initial Certificate Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting of the Class R Certificates Mortgage Loans deposited by CWABS, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, Countrywide Home Loans, Inc., as depositor seller (in such capacity, the "DepositorSeller") and as master servicer (in such capacity, the "Master Servicer"), Deutsche and The Bank National Trust Companyof New York, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the offices designated by the Trustee for such purposes Corporate Trust Office or the office or agency maintained by the Securities Administrator Trustee in New York, New York. No transfer of a Class A-R Certificate shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan ERISA or arrangement subject to Section 4975 of the Code or a plan subject to Similar LawCode, or nor a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator Trustee or the Trust Fund. In the event that such representation is violatedMaster Servicer, or (ii) in the case of any attempt is made to transfer to a plan or arrangement subject to Section 406 such Class A-R Certificate presented for registration in the name of ERISA or a an employee benefit plan subject to ERISA, or Section 4975 of the Code (or a plan subject to Similar Lawcomparable provisions of any subsequent enactments), or a trustee of any such plan or any other person acting on behalf of any such plan plan, an Opinion of Counsel satisfactory to the Trustee and the Master Servicer to the effect that the purchase or arrangement or using holding of such Class A-R Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee or the Master Servicer to any such obligation in addition to those undertaken in this Agreement, which Opinion of Counsel shall not be an expense of the Trustee or the Master Servicer. Notwithstanding anything else to the contrary herein, any purported transfer of a Class A-R Certificate to or on behalf of an employee benefit plan subject to ERISA or arrangement, such attempted transfer or acquisition to the Code without the opinion of counsel satisfactory to the Trustee as described above shall be void and of no effect. Each Holder of this Class A-R Certificate shall will be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisionsrestrictions of the Agreement, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject including but not limited to the following provisions: restrictions that (i) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition transferred without delivery to the certificates required to be delivered to the Securities Administrator under Section 5.02(bTrustee of (a) a transfer affidavit of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form attached as Exhibit G to described in the Agreement, (iii) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must agree (A) to obtain require a Transfer Affidavit from any other Person transfer affidavit and to whom such Person attempts deliver a transfer certificate to Transfer its Ownership Interest this Class R Certificatethe Trustee as required pursuant to the Agreement, (Biv) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee each person holding or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of acquiring an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class A-R Certificate or must agree not to cause the Transfer of the transfer an Ownership Interest in this Class A-R Certificate to any other Person if it has actual knowledge that such Person the proposed transferee is not a Permitted Transferee and (ivv) any attempted or purported Transfer transfer of the any Ownership Interest in this Class A-R Certificate in violation of the provisions herein shall such restrictions will be absolutely null and void and shall will vest no rights in the purported Transfereetransferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 Cut-off Date : August 1, 2004 First : September 25, 2004 Distribution Date Percentage Interest Initial Certificate Balance of this Certificate ("Denomination") : 100% $ Initial Certificate Balances of all Certificates of this Class : $ Pass-Through Rate : CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPC-1 000 XXXXXX XXXIDENTIAL FUNDING CORPORATION. GSAA Home Equity Trust 2004Mortgage Pass-7 Asset-Backed Through Certificates, Series 2004-7 Class R 200 - evidencing a percentage interest in the distributions allocable to the Class A-R Certificates with respect to a Trust Fund consisting primarily of a pool of conventional mortgage loans (the above"Mortgage Loans") secured by first liens on one- to four-referenced Class. Distributions family residential properties MELLON RESIDENTIAL FUNDING CORPORATION, as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Accordingly, the Certificate Balance and is not entitled to distributions in respect of principal or interestat any time may be less than the Certificate Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Seller, the Master Servicer, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [______________ is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the Denomination of this Certificate by the aggregate Initial Certificate Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting of the Mortgage Loans deposited by Mellon Residential Funding Corporation (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, _____________________] is the registered owner of the Percentage Interest specified above of any monthly distributions due to the Class R Certificates pursuant to a Master Servicing and Trust Agreement dated _ as of the Cut-Off Date specified above seller (in such capacity, the "AgreementSeller") between GS Mortgage Securities Corp.and as master servicer (in such capacity, as depositor (the "DepositorMaster Servicer"), Deutsche and Wellx Xxxgo Bank Minnesota, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkCorporate Trust Office. No transfer of a Class A-R Certificate shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan ERISA or arrangement subject to Section 4975 of the Code or a plan subject to Similar LawCode, or nor a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator Trustee or the Trust Fund. In Master Servicer, (ii) if the event purchaser is an insurance company, a representation letter that the purchaser is an insurance company which is purchasing such representation Certificates with funds contained in an "insurance company general account" (as such term is violated, defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60")) or (iii) in the case of any attempt is made to transfer to a plan or arrangement subject to Section 406 such Class A-R Certificate presented for registration in the name of ERISA or a an employee benefit plan subject to ERISA, or Section 4975 of the Code (or a plan subject to Similar Lawcomparable provisions of any subsequent enactments), or a trustee of any such plan or any other person acting on behalf of any such plan, an Opinion of Counsel satisfactory to the Trustee and the Master Servicer to the effect that the purchase or holding of such Class A-R Certificate will not result in a prohibited transaction and will not subject the Trustee or the Master Servicer to any obligation in addition to those undertaken in this Agreement, which Opinion of Counsel shall not be an expense of the Trustee or the Master Servicer. Notwithstanding anything else to the contrary herein, any purported transfer of a Class A-R Certificate to or on behalf of an employee benefit plan subject to ERISA or arrangement or using to the assets Code without the opinion of any such plan or arrangement, such attempted transfer or acquisition counsel satisfactory to the Trustee as described above shall be void and of no effect. Each Holder of this Class A-R Certificate shall will be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisionsrestrictions of the Agreement, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject including but not limited to the following provisions: restrictions that (i) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition transferred without delivery to the certificates required to be delivered to the Securities Administrator under Section 5.02(bTrustee of (a) a transfer affidavit of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form attached as Exhibit G to described in the Agreement, (iii) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must agree (A) to obtain require a Transfer Affidavit from any other Person transfer affidavit and to whom such Person attempts deliver a transfer certificate to Transfer its Ownership Interest this Class R Certificatethe Trustee as required pursuant to the Agreement, (Biv) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee each person holding or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of acquiring an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class A-R Certificate or must agree not to cause the Transfer of the transfer an Ownership Interest in this Class A-R Certificate to any other Person if it has actual knowledge that such Person the proposed transferee is not a Permitted Transferee and (ivv) any attempted or purported Transfer transfer of the any Ownership Interest in this Class A-R Certificate in violation of the provisions herein shall such restrictions will be absolutely null and void and shall will vest no rights in the purported Transfereetransferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee. * * * C-3 129 IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed. Dated: ____________, 20__ WELLX XXXGO BANK MINNESOTA, NATIONAL ASSOCIATION, as Trustee By _______________________________________ Countersigned: By _______________________________ Authorized Signatory of WELLX XXXGO BANK MINNESOTA, NATIONAL ASSOCIATION, as Trustee EXHIBIT D [FORM OF NOTIONAL AMOUNT CERTIFICATE] [SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A "REGULAR INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE").] THIS CERTIFICATE HAS NO PRINCIPAL BALANCE AND IS NOT ENTITLED TO ANY DISTRIBUTIONS IN RESPECT OF PRINCIPAL. [THE FOLLOWING INFORMATION IS PROVIDED SOLELY FOR THE PURPOSE OF APPLYING THE U.S. FEDERAL INCOME TAX ORIGINAL ISSUE DISCOUNT ("OID") RULES UNDER THE CODE TO THIS CERTIFICATE. THE ISSUE DATE OF THIS CERTIFICATE IS __________, 200_. THE INITIAL PER ANNUM RATE OF INTEREST ON THIS CERTIFICATE IS ________%. ASSUMING THAT THE MORTGAGE LOANS PREPAY AT AN ASSUMED RATE OF PREPAYMENT OF __________% PER ANNUM (THE "PREPAYMENT ASSUMPTION"), THIS CERTIFICATE HAS BEEN ISSUED WITH $_______ OF OID ON THE INITIAL POOL STATED PRINCIPAL BALANCE; THE ANNUAL YIELD TO MATURITY OF THIS CERTIFICATE FOR PURPOSES OF COMPUTING THE ACCRUAL OF OID IS APPROXIMATELY _____% (COMPOUNDED MONTHLY); THE AMOUNT OF OID ALLOCABLE TO THE SHORT FIRST ACCRUAL PERIOD IS $________ ON THE INITIAL POOL STATED PRINCIPAL BALANCE; AND THE METHOD USED TO CALCULATE THE ANNUAL YIELD TO MATURITY AND THE AMOUNT OF OID ALLOCABLE TO THE SHORT FIRST ACCRUAL PERIOD IS THE EXACT METHOD AS DEFINED IN PROPOSED TREASURY REGULATIONS. NO REPRESENTATION IS MADE THAT THE MORTGAGE LOANS WILL PREPAY AT A RATE BASED ON THE PREPAYMENT ASSUMPTION OR AT ANY OTHER RATE. THE ACTUAL YIELD TO MATURITY MAY DIFFER FROM THAT SET FORTH ABOVE, AND THE ACCRUAL OF OID WILL BE ADJUSTED, IN ACCORDANCE WITH SECTION 1272(a)(6) OF THE CODE, TO TAKE INTO ACCOUNT EVENTS WHICH HAVE OCCURRED DURING ANY ACCRUAL PERIOD. THE PREPAYMENT ASSUMPTION IS INTENDED TO BE THE PREPAYMENT ASSUMPTION REFERRED TO IN SECTION 1272(a)(6)(B)(iii) OF THE CODE.] Certificate No. : Cut-off Date : First Distribution Date : Initial Notional Amount of this Certificate ("Denomination") : Initial Notional Amount of all Certificates of this Class : Pass-Through Rate : CUSIP : D-1 000 XXXXXX XXXIDENTIAL FUNDING CORPORATION Mortgage Pass-Through Certificates, Series 200 - Class [ ] evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of a pool of conventional loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties MELLON RESIDENTIAL FUNDING CORPORATION, as Depositor This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Seller, the Master Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that ___________________ is the registered owner of the Percentage Interest evidenced by this Certificate specified above in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mellon Residential Funding Corporation (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of Cut-off Date specified above (the "Agreement") among the Depositor, _______________ as seller (in such capacity, the "Seller") and as master servicer (in such capacity, the "Master Servicer"), and Wellx Xxxgo Bank Minnesota, National Association, as trustee (the "Trustee"). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee. * * *

Certificate No. R-1 7-A-12-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $1,052,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K LC 1 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 3-A-2-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $1,500,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KB 4 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 3 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 2-A-1-[_] Cut-off Date Date: August December 1, 2004 2001 First Distribution Date: September January 25, 2004 Distribution Date Percentage Interest 2002 Pass-Through Rate: 5.50% Initial Certificate Principal Balance of this Certificate $[________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $63,614,000 of this Class: 100% CUSIP CUSIP: 36242D EE 55265K BR 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2001-7 Asset3 Mortgage Pass-Backed Through Certificates, Series 20042001-7 Class R 3 CLASS 2-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of four pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Xxxxx Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), and Citibank, N.A., as trustee (the "Trustee") and custodian). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 2 pursuant to the terms of the Agreement, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian. To to the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August May 1, 2004 2006 First : September 25, 2004 Distribution Date Percentage Interest : June 26, 2006 Initial Certificate Balance of this Certificate ("Denomination") : 100% ------------ Initial Certificate Balances of all Certificates of this Class : _______________ ________________ CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity Trust 20042006-7 9 Asset-Backed Certificates, Series 20042006-7 9 [Class R A-1][Class A-2][Class A-3][Class A-4-A][Class A-4-B] [Class M-1][Class M-2][Class M-3][Class M-4][Class M-5] [Class B-1][Class B-2][Class B-3] evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Accordingly, the Certificate Balance and is not entitled to distributions in respect of principal or interestat any time may be less than the Certificate Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] CEDE & CO. is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche U.S. Bank National Trust CompanyAssociation, as trustee (the "Trustee") and as a custodian, Wells Fargo JPMorgan Chase Bank, N.A.National Association, as Master Servicer (in such capacity, the "Mastxx XxrvicerMaster Servicer") and securities administrator Securities Administrator (in such capacity, the "Securities Administrator") and JPMorgan Chase Bankas a custodian and Deutsche Bank National Trust Company, as a custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.. * * *

Certificate No. R-1 7-A-8-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $5,000,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KY 4 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 : 1 Cut-off Date : August April 1, 2004 First Distribution Date : September May 25, 2004 Distribution Date Percentage Interest of : this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 36228F S6 4 ISIN : US36242DEE94 US36228FS642 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 2004-7 AssetHE1 Mortgage Pass-Backed Through Certificates, Series 2004-7 HE1 Class R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above April 1, 2004 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Ocwen Federal Bank FSB, as servicer, Chase Manhattan Mortgage Corporation, as servicer (collectively, the "Servicers") and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New Yorkpurposes. No transfer of a Class R Certificate shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator Trustee under Section 5.02(b) of the Agreement, the Securities Administrator Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August December 1, 2004 2005 First : September 25, 2004 Distribution Date : January 27, 2006 Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 362341 M7 1 ISIN : US36242DEE94 US362341M713 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 20042005-7 AssetWMC3 Mortgage Pass-Backed Through Certificates, Series 20042005-7 WMC3 Class R R-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. This Class R R-1 Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Purchaser, WMC or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due to the Class R R-1 Certificates pursuant to a Master Pooling and Servicing and Trust Agreement Agreement, dated as of the Cut-Off off Date specified above (the "Agreement") between ), among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank Litton Loan Servicing LP, as servicer (the "Servicer"), Wells Fargx Xxxx, N.A., as custodian (the "Custodian"), and Deutscxx Xxnk National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R R-1 Certificate at the offices designated by the Trustee for such purposes or such other location specified in the office or agency maintained by the Securities Administrator in New York, New Yorknotice to Certificateholders. No transfer of a Class R R-1 Certificate shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R R-1 Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R R-1 Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R R-1 Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R R-1 Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R R-1 Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator Trustee under Section 5.02(b) of the Agreement, the Securities Administrator Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R R-1 Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R R-1 Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R R-1 Certificate, (C) not to cause income with respect to the Class R R-1 Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R R-1 Certificate or to cause the Transfer of the Ownership Interest in this Class R R-1 Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R R-1 Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 1 Cut-off Date : August 1, 2004 First Distribution Date : September 2527, 2004 Distribution Date Percentage Interest Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$ 375,737,000.00 Original Class Certificate Principal Balance of this Class : $ 375,737,000.00 Percentage Interest : 100.00% Pass-Through Rate : Variable CUSIP : 36242D EE 317350 AZ 9 ISIN Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity I-A1 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-7 2 Asset-Backed Certificates, Series 2004-7 2 Class R I-A1 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to the Trust consisting of first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class I-A1 Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This I-A1 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class I-A1 Certificate (obtained by dividing the Denomination of any this Class I-A1 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Financial Asset Securities Corp. (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above August 1, 2004 (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, HomEq Servicing Corporation, as depositor servicer (the "DepositorServicer"), and Deutsche Bank National Trust Company, a national banking association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class I-A1 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class I-A1 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class I-A1 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class I-A1 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 3-A-1-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $144,950,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K KA 6 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 3 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 1 Cut-off Date : August March 1, 2004 First Distribution Date : September 25April 26, 2004 Distribution Date Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 362260 AJ 0 ISIN : US36242DEE94 US362260AJ08 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 2004-7 AssetFM2 Mortgage Pass-Backed Through Certificates, Series 2004-7 FM2 Class R P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_________________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above March 1, 2004 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank HomEq Servicing Corporation, as servicer (the "Servicer"), and Wells Fargo Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent xxx xxtent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes purpose, or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of any such or investing plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported TransfereeTrustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 1 Cut-off Date : August April 1, 2004 2003 First : September 25, 2004 Distribution Date Percentage Interest : May 26, 2003 Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$[__] Original Class Certificate Principal Balance of this Class : $[__] Percentage Interest : 100.00% Pass-Through Rate : [__]% CUSIP : 36242D EE 9 ISIN 32027N BX 8 Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity A-1 Assumed Maturity Date : [________________] First Franklin Mortgage Loan Trust 20042003-7 FF1 Asset-Backed Certificates, Series 20042003-7 FF1 Class R A-1 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to the Trust consisting of first lien adjustable-rate and fixed-rate mortgage loans (the "Mortgage Loans") FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class A-1 Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This A-1 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class A-1 Certificate (obtained by dividing the Denomination of any this Class A-1 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Financial Asset Securities Corp. (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above April 1, 2003 (the "Agreement") between GS Mortgage Securities among the Depositor, Fairbanks Capital Corp., as depositor servicer (the "DepositorServicer"), Deutsche and Wxxxx Fargo Bank Minnesota, National Trust CompanyAssociation, a national banking association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class A-1 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class A-1 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class A-1 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class A-1 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. A-R-1 Cut-off Date Date: August December 1, 2004 2001 First Distribution Date: September January 25, 2004 Distribution Date Percentage Interest 2002 Pass-Through Rate: 6.50% Initial Certificate Principal Balance of this Certificate $100 ("Denomination") ): Initial Certificate Principal Balances of all Certificates of $100 this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 269243 AE 1 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. E*TRADE BANK MORTGAGE-BACKED SECURITIES CORP. GSAA Home Equity Trust 2004TRUST 2001-7 Asset2 Mortgage Pass-Backed Through Certificates, Series 20042001-7 Class R 2 evidencing a percentage interest in the distributions allocable to the Class A-R Certificates with respect to a Trust Fund consisting primarily of a pool of conventional loans (the above"Mortgage Loans") secured by first liens on one- to four-referenced Class. Distributions family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above (obtained by dividing the Denomination of any this Certificate by the aggregate initial Class Principal Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, Wells Fargo Bank Xxxxxsota, N.A., as depositor master servicer (the "DepositorServicer"), Deutsche Bank National Trust Companyand JPMorgan Chase Bank., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the offices designated by Corporate Trust Office of the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Class A-R Certificate shall be made unless the Securities Administrator Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or nor a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transferplan, which representation letter shall not be an expense of the Securities Administrator Trustee or the Trust FundServicer. In Notwithstanding anything else to the event that such representation is violated, contrary herein any purported transfer of a Class A-R Certificate to or any attempt is made to transfer to a plan or arrangement subject to Section 406 on behalf of ERISA or a an employee benefit plan subject to Section 4975 of ERISA, the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition Law shall be void and of no effect. Each Holder of this Class A-R Certificate shall will be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisionsrestrictions of the Agreement, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject including but not limited to the following provisions: restrictions that (i) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition transferred without delivery to the certificates required to be delivered to the Securities Administrator under Section 5.02(bTrustee of (a) a transfer affidavit of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form attached as Exhibit G to described in the Agreement, (iii) each Person person holding or acquiring any Ownership Interest in this Class A-R Certificate shall must agree (A) to obtain require a Transfer Affidavit from any other Person transfer affidavit and to whom such Person attempts deliver a transfer certificate to Transfer its Ownership Interest this Class R Certificatethe Trustee as required pursuant to the Agreement, (Biv) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee each person holding or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of acquiring an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class A-R Certificate or must agree not to cause the Transfer of the transfer an Ownership Interest in this Class A-R Certificate to any other Person if it has actual knowledge that such Person the proposed transferee is not a Permitted Transferee and (ivv) any attempted or purported Transfer transfer of the any Ownership Interest in this Class A-R Certificate in violation of the provisions herein shall such restrictions will be absolutely null and void and shall will vest no rights in the purported Transfereetransferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 2-A-1-[__] Cut-off Date Date: August 1, 2004 2002 First Distribution Date: September 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: September 25, 2017 Pass-Through Rate: 6.000% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $71,350,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K GX 1 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 20042002-7 5 Class R 2-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 2 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 CutA-1-off Date 1 CUSIP No: August 1805559 AD 3 This Certificate evidences a beneficial ownership interest in a Trust consisting primarily of a pool of Mortgage Loans (collectively, 2004 First : September 25, 2004 Distribution Date Percentage Interest of this Certificate (the "DenominationMortgage Loans") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS formed and sold by SAXON ASSET SECURITIES COMPANY THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN SAXON ASSET SECURITIES COMPANY, THE MASTER SERVICER, ANY SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE SECURITIES CORPLOANS ARE GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES. GSAA Home Equity Trust 2004-7 Asset-Backed Certificates, Series 2004-7 Class R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] The Registered Holder named above is the registered owner of the Percentage Interest specified calculated as set forth below in the above mentioned Class of any monthly distributions due to Certificates issued by the Class R Certificates Trust (the "Trust") created pursuant to a Master Servicing and Trust Agreement trust agreement dated as of the Cut-Off Date specified above November 1, 1996 (the "Trust Agreement") between GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche among Saxon Asset Securities Company (herein called "Saxon," which term includes any successor entity under the "Trust Agreement"), Texas Commerce Bank National Trust CompanyAssociation, as trustee (the "Trustee") Master Servicer, Paying Agent, Custodian and custodianCertificate Registrar, Wells Fargo Bankand Citibank, N.A., as Master Servicer (in such capacityTrustee, a summary of certain of the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodianpertinent provisions of which is set forth herein. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Trust Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, Trust Agreement to which Trust Agreement the Holder of this Certificate Certificate, by virtue of the acceptance hereof hereof, assents and by which such Holder is bound. Any distribution This Certificate is one of a duly authorized issue of Certificates designated as Mortgage Loan Asset Backed Certificates, Series 19962 (herein called the "Certificates") and represents a Percentage Interest in the above mentioned Class of Certificates equal to the quotient, expressed as a percentage, obtained by dividing the Denomination of this Certificate specified above by the Initial Principal Balance specified above of the proceeds above mentioned Class of any remaining assets Certificates. The Certificates are issued in multiple Classes designated as specifically set forth in the Trust Agreement. The Certificates will evidence in the aggregate 100% of the beneficial ownership of the Trust. To the extent and subject to the limitations set forth in the Trust Fund Agreement, the Person in whose name this Certificate is registered at the close of business on the last Business Day of the month immediately preceding the month of such distribution (the "Record Date") is entitled to receive the Distribution Amount with respect to the above mentioned Class of Certificates on the 25th day of each month or, if such 25th day is not a Business Day, the next succeeding Business Day (each a "Distribution Date"), commencing on December 26, 1996. All amounts distributable with respect to this Certificate are payable in the coin or currency of the United States of America as at the time of payment is legal tender for the payment of public and private debts. The Certificates are limited in right of payment to certain collections and recoveries respecting the Mortgage Loans, all as more specifically set forth in the Trust Agreement. As provided in the Trust Agreement, withdrawals from the Asset Proceeds Account and related accounts shall be made from time to time for purposes other than distributions to Holders of the Certificates, such purposes including reimbursement of Advances made, or certain expenses incurred, with respect to the Mortgage Loans and administration of the Trust. So long as this Certificate is registered in the name of a Clearing Agency or its nominee, the Paying Agent will make distributions on this Certificate by wire transfer of immediately available funds to the Clearing Agency or its nominee. Otherwise, all distributions under the Trust Agreement will be made by the Paying Agent either (i) by check mailed to the address of the Holder as it appears on the Certificate Register on the related Record Date or (ii) upon request to the Paying Agent in writing by the Record Date immediately prior to the Distribution Date of any Holder of Certificates of this Class having an aggregate initial principal amount equal to or in excess of $1,000,000, by wire transfer of immediately available funds to the account of such Holder. A fee may be charged by the Paying Agent to a Certificateholder for any payment made by wire transfer. Notwithstanding the above, the final distribution on this Certificate will be made after due notice by the Paying Agent of a pendency of such distribution and only upon presentment presentation and surrender of this Class R Certificate at its principal Corporate Trust Office or such other offices or agencies appointed by the Paying Agent for that purpose and such other locations provided in the Trust Agreement. The Certificate Insurer is required, subject to the terms of the Certificate Insurance Policy, to make Insured Payments available to the Trustee (directly or through a Paying Agent) on or prior to the related Distribution Date for distribution to the Holders. Upon receipt of amounts under the Certificate Insurance Policy on behalf of the Holders of the above mentioned Class of Certificates, the Trustee shall distribute in accordance with the Trust Agreement such amounts (directly or through a Paying Agent) to the Holders of the above mentioned Class of Certificates. The Trustee will duly and punctually make distributions with respect to this Certificate in accordance with the terms hereof and the Trust Agreement. Amounts properly withheld under the Code by any Person from a distribution to any Holder shall be considered as having been distributed to such Holder for all purposes of the Trust Agreement. The Trust Agreement permits, with certain exceptions therein provided, the amendment thereof and the modification of the rights and obligations of Saxon and the Trustee and the rights of the Holders of the Certificates under the Trust Agreement at any time by Saxon, the Master Servicer and the Trustee with consent of the Holders of Certificates entitled to at least 66% of the Voting Rights. Any such consent by the Holder of this Certificate shall be conclusive and binding on such Holder and upon all future Holders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange hereof or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Trust Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Holders of any of the Certificates. Unless there is a Certificate Insurer Default, the Certificate Insurer is entitled to exercise all Voting Rights of the Class A Certificateholders. As provided in the Trust Agreement and subject to any limitations on transfer of this Certificate by a Clearing Agency or its nominee and certain limitations set forth in the Trust Agreement, the transfer of this Certificate is registerable in the Certificate Register upon surrender of this Certificate for registration of transfer at the principal Corporate Trust Office of the Certificate Registrar or such other offices designated or agencies appointed by the Trustee for that purpose and such purposes other locations provided in the Trust Agreement, duly endorsed by or accompanied by an assignment in the office form below or agency maintained by the Securities Administrator in New York, New York. No other written instrument of transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the TrusteeCertificate Registrar and duly executed by the Holder hereof or such Holder's attorney duly authorized in writing, and thereupon one or more new Certificates of the same Class in the same aggregate principal balance will be issued to the effect that such designated transferee is not an employee benefit plan or arrangement subject transferees. Subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 the terms of the Code or a plan subject to Similar LawTrust Agreement, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder Certificates of this Class R Certificate shall will be deemed registered as one or more certificates held by a Clearing Agency or its nominee and beneficial interests will be held by Beneficial Owners through the acceptance book-entry facilities of such Clearing Agency or acquisition an Ownership Interest its nominee in this Class R Certificate to have agreed to be bound by minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof. As provided in the following provisions, Trust Agreement and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to certain limitations therein set forth, this Certificate is exchangeable for a new Certificate of the following provisions: (i) each Person holding same Class in the same denomination. No service charge will be made for any such registration of transfer or acquiring exchange, but the Certificate Registrar may require payment of a sum sufficient to cover any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change tax or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate other governmental charge that may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent imposed in connection with any Transfer transfer or exchange of Certificates. Saxon, the Master Servicer, the Trustee, the Paying Agent and the Certificate Registrar and any agent of Saxon, the Master Servicer, the Trustee, the Paying Agent or the Certificate Registrar may treat the Person in whose name this Class R CertificateCertificate is registered as the owner hereof for all purposes, and none of Saxon, the Master Servicer, the Trustee, the Paying Agent, the Certificate Registrar or any such agent shall be affected by notice to the contrary. The Trust Agreement provides that the obligations created thereby will terminate upon the earlier of (Ci) not the payment to cause income the Holders of all Certificates from amounts other than those available under the related Certificate Insurance Policy of all amounts held by the Trustee and required to be paid to such Holders pursuant to the Trust Agreement upon the later to occur of (a) the final payment or other liquidation (or any advance made with respect to thereto) of the last Mortgage Loan in the Trust Estate or (b) the disposition of all property acquired in respect of any Mortgage Loan remaining in the Trust Estate or (ii) at any time when a qualified liquidation of the Trust Estate is effected as described in the Agreement. The Trust Agreement also provides that (i) the Holders of a majority of the Class R Certificate to be attributable to a foreign permanent establishment or fixed baseCertificates may, within at their option, purchase from the meaning Trust all remaining Mortgage Loans and other property then constituting the Trust Estate, and thereby effect early retirement of an applicable income tax treatythe Certificates, of such Person or on any other U.S. Person Distribution Date after the Initial Optional Redemption Date and (Dii) not under certain circumstances relating to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer qualification of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not REMIC as a Permitted Transferee and (iv) any attempted or purported Transfer REMIC under the Code the Mortgage Loans may be sold, thereby effecting the early retirement of the Ownership Interest in Certificates. Unless the certificate of authentication hereon has been executed by the Certificate Registrar, by manual signature, this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Trust Agreement or be valid for any purpose unless manually authenticated by an authorized signatory purpose. THIS CERTIFICATE AND THE TRUST AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK. The Trustee has executed this Certificate on behalf of the Securities AdministratorTrust not in its individual capacity but solely as Trustee under the Trust Agreement, and the Trustee shall be liable hereunder only in respect of the assets of the Trust. Capitalized terms used and not defined herein have the meaning given them in the Trust Agreement.

Certificate No. R-1 Cut-off Date : August September 1, 2004 First Distribution Date : September October 25, 2004 Distribution Date Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity Trust 2004-7 8 Asset-Backed Certificates, Series 2004-7 8 Class R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any monthly distributions due to the Class R Certificates pursuant to a Master Servicing and Trust Agreement dated as of the Cut-Off Date specified above (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.. * * *

Certificate No. R-1 1 Cut-off Date : August 1, 2004 First Distribution Date : September 2527, 2004 Distribution Date Percentage Interest Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$ 8,817,000.00 Original Class Certificate Principal Balance of this Class : $ 8,817,000.00 Percentage Interest : 100.00% Pass-Through Rate : Variable CUSIP : 36242D EE 9 ISIN 317350 BM 7 Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity M-9 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-7 2 Asset-Backed Certificates, Series 2004-7 2 Class R M-9 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-above- referenced Class. Distributions Class with respect to the Trust consisting of first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class M-9 Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This M-9 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class M-9 Certificate (obtained by dividing the Denomination of any this Class M-9 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Financial Asset Securities Corp. (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above August 1, 2004 (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, HomEq Servicing Corporation, as depositor servicer (the "DepositorServicer"), and Deutsche Bank National Trust Company, a national banking association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class M-9 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class M-9 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of this Certificate to a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement Plan subject to Section 406 of ERISA, a plan ERISA or arrangement subject to Section 4975 of the Code Code, any Person acting, directly or a plan subject to Similar Lawindirectly, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, Plan or any attempt is made person using Plan Assets to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of acquire this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest made except in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under accordance with Section 5.02(b5.02(d) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class M-9 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class M-9 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 6-A-1-[_] Cut-off Date Date: August May 1, 2004 First Distribution Date: September June 25, 2004 Last Scheduled Distribution Date Percentage Interest Date: June 25, 2034 Pass-Through Rate: 7.00% Initial Certificate Principal Balance of this Certificate ("Denomination") ): $[ ] Initial Certificate Principal Balances of all Certificates of this Class: 100% CUSIP $45,000,000 CUSIP: 36242D EE 9 ISIN 576434 RL 0 ISIN: US36242DEE94 GS US576434RL01 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust MASTR ALTERNATIVE LOAN TRUST 2004-7 Asset5 Mortgage Pass-Backed Through Certificates, Series 2004-7 5 Class R 6-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Servxxxx"), trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Trust CompanyAssociation, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, ). Distributions on this Certificate will be made primarily from collections on the "Mastxx Xxrvicer") and securities administrator (in such capacity, applicable Mortgage Loans pursuant to the "Securities Administrator) and JPMorgan Chase Bank, as custodianterms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 7-A-1-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2032 Pass-Through Rate: 4.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $67,866,000 of this Class: 100% CUSIP CUSIP: 36242D EE 55265K KR 9 ISIN : US36242DEE94 GS MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 Class R 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 7 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August May 1, 2004 2001 First Distribution Date : September June 25, 2004 Distribution Date Percentage Interest 2001 Initial Certificate Balance of this Certificate ("Denomination") : 100% Initial Certificate Balances of all Certificates of this Class : Percentage Interest : CUSIP : 36242D EE 9 ISIN Pass-Through Rate : US36242DEE94 GS None Maturity Date : CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP. GSAA Home Equity Trust 2004-7 AssetCredit Suisse First Boston Mortgage Securities Corp., Mortgage-Backed Pass-Through Certificates, Series 20042001-7 11 Class R A-P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced ClassClass with respect to a Trust Fund consisting primarily of a pool of fixed rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties. Distributions in respect of this Certificate is distributable monthly Credit Suisse First Boston Mortgage Securities Corp., as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. Depositor This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Sellers, the Servicers, the Trustee or the Trustee Trust Administrator referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] CEDE & CO, is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Credit Suisse First Boston Mortgage Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS among the Depositor, DLJ Mortgage Capital, Inc., as a seller (in such capacity, a "Seller"), Washington Mutual Mortgage Securities Corp., as depositor a seller (the in such capacity, a "DepositorSeller") and a servicer (in such capacity, a "Servicer"), Deutsche Bank One, National Trust CompanyAssociation, as trustee (the "Trustee"), The Chase Manhattan Bank, as trust administrator (the "Trust Administrator") and custodian, Wells Fargo Bank, N.A.Calmco Servicing L.P., as Master Servicer a special servicer (in such capacity, the a "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian. To Special Servicer").To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Trust Administrator.

Certificate No. R-1 Cut-off Date : August March 1, 2004 First Distribution Date : September 25April 26, 2004 Distribution Date Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN 362260 AL 5 ISIN: US36242DEE94 : US362260AL53 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 2004-7 AssetFM2 Mortgage Pass-Backed Through Certificates, Series 2004-7 FM2 Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above March 1, 2004 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Deutsche Bank HomEq Servicing Corporation, as servicer (the "Servicer"), and Wells Fargo Bank, National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent xxx xxtent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a person acting on behalf trustee of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a other person acting on behalf of any such plan or arrangement or using the assets of any such plan plan's or arrangement's assets, such attempted transfer or acquisition shall be void and an Opinion of no effect. Each Holder of this Class R Certificate shall be deemed by Counsel satisfactory to the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, Trustee and the rights Servicer, which Opinion of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted TransfereeTrustee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to effect that the Securities Administrator under Section 5.02(b) purchase or holding of the Agreement, the Securities Administrator shall have been furnished with such Certificate will not constitute or result in a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, prohibited transaction within the meaning of an applicable income tax treatyERISA, Section 4975 of such Person the Code or any other U.S. Person Similar Law and (D) will not subject the Trustee or the Servicer to Transfer the Ownership Interest any obligation in addition to those expressly undertaken in this Class R Certificate Agreement or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereeliability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 1 Cut-off Date : August 1, 2004 First Distribution Date : September 2527, 2004 Distribution Date Percentage Interest Initial Certificate Principal Balance of this Certificate ("Denomination") : 100$ 10,581,000.00 Original Class Certificate Principal Balance of this Class : $ 10,581,000.00 Percentage Interest : 100.00% Pass-Through Rate : Variable CUSIP : 36242D EE 317350 BL 9 ISIN Class : US36242DEE94 GS MORTGAGE SECURITIES CORP. GSAA Home Equity M-8 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-7 2 Asset-Backed Certificates, Series 2004-7 2 Class R M-8 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to the Trust consisting of first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class M-8 Certificate at any time may be less than the Initial Certificate Principal Balance set forth on the face hereof, as described herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This M-8 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor Depositor, the Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] Cede & Co. is the registered owner of the Percentage Interest specified above evidenced by this Class M-8 Certificate (obtained by dividing the Denomination of any this Class M-8 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions due with respect to a Trust consisting primarily of the Class R Certificates Mortgage Loans deposited by Financial Asset Securities Corp. (the "Depositor"). The Trust was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above August 1, 2004 (the "Agreement") between GS Mortgage Securities Corp.among the Depositor, HomEq Servicing Corporation, as depositor servicer (the "DepositorServicer"), and Deutsche Bank National Trust Company, a national banking association, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class M-8 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class M-8 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of this Certificate to a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement Plan subject to Section 406 of ERISA, a plan ERISA or arrangement subject to Section 4975 of the Code Code, any Person acting, directly or a plan subject to Similar Lawindirectly, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, Plan or any attempt is made person using Plan Assets to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of acquire this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest made except in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under accordance with Section 5.02(b5.02(d) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Class M-8 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class M-8 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August May 1, 2004 2001 First Distribution Date : September June 25, 2004 Distribution Date 2001 Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN Maturity Date : US36242DEE94 GS CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP. GSAA Home Equity CSFB ABS Trust 2004Series 2001-7 AssetHE12 CSFB Mortgage Pass-Backed Through Certificates, Series 20042001-7 HE12 Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced ClassClass with respect to a Trust Fund consisting primarily of a pool of fixed rate and adjustable rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties. Distributions in respect of this Certificate is distributable monthly Credit Suisse First Boston Mortgage Securities Corp., as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. Depositor This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Seller, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] CREDIT SUISSE FIRST BOSTON CORPORATION is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Credit Suisse First Boston Mortgage Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS among the Depositor, DLJ Mortgage Securities Corp.Capital, Inc., as depositor seller (the in such capacity, "DepositorSeller"), Deutsche Calmco Servicing L.P., as servicer (in such capacity, "Servicer") and U.S. Bank National Trust CompanyAssociation, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August December 1, 2004 First Distribution Date : September January 25, 2004 Distribution Date 2005 Percentage Interest of this Certificate ("Denomination") : 100___% CUSIP : 36242D EE 9 ISIN SL 8 ISIN: US36242DEE94 : 36242DSL81 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 2004-7 AssetOPT Mortgage Pass-Backed Through Certificates, Series 2004-7 OPT Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above December 1, 2004 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Option One Mortgage Corporation, a California corporation, as servicer (in such capacity, the "Servicer") and responsible party (in such capacity, the "Responsible Party"), Wells Fargo Bank, National Association, as custodian, and Deutsche Bank National Xxxxonal Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the office or agency maintained by the Securities Administrator in New York, New Yorknotice to Certificateholders. No transfer of a Certificate of this Class R Certificate shall be made unless such disposition is exempt from the registration requirements of the Securities Administrator shall have received a representation letter from Act of 1933, as amended (the transferee of "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such Certificate, acceptable to and in form and substance satisfactory to laws. In the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf event of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which representation letter Opinion of Counsel shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereetransferor. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated by an authorized signatory of the Securities Administrator.Trustee. * * *

Certificate No. R-1 1-A-1-[__] Cut-off Date Date: August September 1, 2004 2002 First Distribution Date: September October 25, 2004 2002 Last Scheduled Distribution Date Percentage Interest Date: October 25, 2017 Pass-Through Rate: 5.750% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination") ): Initial Certificate Principal Balances of all Certificates $108,000,000 of this Class: 100% CUSIP CUSIP: 36242D EE 9 ISIN : US36242DEE94 GS 55265K JX 8 MORTGAGE SECURITIES CORPASSET SECURITIZATION TRANSACTIONS, INC. GSAA Home Equity Trust 2004MASTR ASSET SECURITIZATION TRUST 2002-7 Asset6 Mortgage Pass-Backed Through Certificates, Series 20042002-7 6 Class R 1-A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions Class with respect to a Trust Fund consisting primarily of seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. This Class R Accordingly, the Certificate has no Principal Balance at any time may be less than the Certificate Principal Balance and is not entitled to distributions in respect of principal or interestas set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_____________________] _ is the registered owner of the Percentage Interest specified above of any evidenced by this Certificate in certain monthly distributions due with respect to a Trust Fund consisting primarily of the Class R Certificates Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off off Date specified above (the "Agreement") between GS Mortgage among the Depositor, UBS Warburg Real Estate Securities Corp.Inc., as depositor transferor (the "DepositorTransferor"), Deutsche Wells Fargo Bank National Trust CompanyMinnesota, N.A., as master servicer (the "Servicer"), xxx Xank One, N.A., as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in such capacity, Loan Group 1 pursuant to the "Mastxx Xxrvicer") and securities administrator (in such capacity, terms of the "Securities Administrator) and JPMorgan Chase Bank, as custodianAgreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities AdministratorTrustee.

Certificate No. R-1 Cut-off Date : August December 1, 2004 2002 First : September 25, 2004 Distribution Date : January 20, 2003 Percentage Interest of this Certificate ("Denomination") : 100% CUSIP : 36242D EE 9 ISIN 36228F LE4 ISIN: US36242DEE94 : US63228FLE42 GS MORTGAGE SECURITIES CORP. GSAA Home Equity GSAMP Trust 20042002-7 AssetHE2 Mortgage Pass-Backed Through Certificates, Series 20042002-7 HE2 Class R X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. This Class R Certificate has no Certificate Balance and is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor the Master ServicerDepositor, the Securities Administrator Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________________] is the registered owner of the Percentage Interest specified above evidenced by this Certificate (obtained by dividing the denomination of any this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions due to the Class R Certificates pursuant to a Master Pooling and Servicing and Trust Agreement dated as of the Cut-Off Date specified above December 1, 2002 (the "Agreement") between among GS Mortgage Securities Corp., as depositor (the "Depositor"), Litton Loan Servicing LP, as servicex (xxx "Servicer"), and Deutsche Bank National Trust Company, as trustee (the "Trustee") and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the "Mastxx Xxrvicer") and securities administrator (in such capacity, the "Securities Administrator) and JPMorgan Chase Bank, as custodian). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New YorkTrustee. No transfer of a Certificate of this Class R shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Securities Administrator Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a person acting on behalf trustee of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not result in the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be the Trust Fund being deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, "plan assets" and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator prohibited transaction provisions of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, ERISA and the Securities Administrator shall Code and will not register subject the Transfer of this Certificate unless, Trustee or the Servicer to any obligation in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest those expressly undertaken in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate Agreement or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transfereeliability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually authenticated countersigned by an authorized signatory of the Securities Administrator.Trustee. * * *