What are the advantages and disadvantages of confirming the accuracy of status reports filed by your team members?

You correctly defined and introduced the Scope Bank to your client, who initially agreed to use it. However, the client seems to have forgotten their agreement. The Scope Bank needs a deposit in order to process a new change request, and the client insists on integrating the most recent change request without removing any functions or features not yet integrated into the solution. You are at an impasse. How will you resolve the stalemate?