Variation. No variation of this Agreement shall be valid unless it is in writing and signed by or on behalf of each of the parties.
Variation. No variation of this agreement shall be effective unless it is in writing and signed by the parties (or their authorised representatives).
Variation. 16. (1) The parties to this Agreement may from time to time, by agreement in writing, add to, substitute for, cancel or vary all or any of the provisions of this Agreement or of any lease, licence, easement, grant or other title granted under or pursuant to this Agreement for the purpose of more efficiently or satisfactorily implementing or facilitating any of the subject matter of this Agreement.
Variation. No addition to or variation, consensual cancellation or novation of this Agreement and no waiver of any right arising from this Agreement or its breach or termination shall be of any force or effect unless reduced to writing and signed by all the Parties or their duly authorised representatives.
Variation. A variation of any term of this agreement must be in writing and signed by the parties.
Variation. An amendment or variation to this Agreement is not effective unless it is in writing and signed by the parties.
Variation. No variation of this Agreement (or of any of the documents referred to in this Agreement) shall be valid unless it is in writing and signed by or on behalf of each of the parties to it. The expression "variation" shall include any variation, supplement, deletion or replacement however effected.
Variation. Except as set out in these Conditions, no variation of the Contract, including the introduction of any additional terms and conditions shall be effective unless it is agreed in writing and signed by the Supplier.
Variation. No variation of this Agreement shall be effective unless in writing and signed by or on behalf of each of the parties to this Agreement.