A project has met the agreed product requirements and is closing. There is remaining schedule time and excess budget, and resources are not yet reassigned. Product champions want to continue adding functionality. What should the project manager do?

The project has met its agreed product requirements, signifying successful completion based on the project closure criteria. The project manager's primary responsibility is to deliver the defined scope within the approved constraints. Continuing to add functionality, even with remaining time and budget, constitutes scope creep and deviates from the project's original objectives. Releasing the remaining budget and resources is the correct action, as these are no longer needed for the completed project. Adding scope without using the budget is illogical, as any work requires resources. Performing additional quality checks beyond what was planned is also scope creep and not necessary if requirements are met. Obtaining sponsor approval to add functionality, while seemingly a good idea, still represents scope creep and would require a new project or a formal change request, not simply using leftover funds.