Common use of Bills valid unless disputed Clause in Contracts

Bills valid unless disputed. You can dispute a charge in a bill so long as You do so in accordance with this clause, otherwise You agree that any bill issued by Us to You is valid and You must pay any undisputed amount included in the bill in accordance with clause 14.1.

Bills valid unless disputed. You can dispute a charge in a bill xxxx so long as You do so in accordance with this clause, otherwise You agree that any bill xxxx issued by Us to You is valid and You must pay any undisputed amount included in the bill xxxx in accordance with clause 14.1.