A project team delivered a critical deliverable, but the customer complained the maintenance manual was not included. What should the project manager do next?

The project manager should first review the contract's terms and conditions to determine if the maintenance manual was a required deliverable. This foundational document defines the project scope and deliverables. If the contract specifies the manual, the team failed to meet a contractual obligation. If it doesn't, the manual represents a new requirement. Submitting a change request is premature without understanding the contractual baseline. Reviewing the stakeholder engagement plan is less relevant at this stage, as the immediate issue is a potential scope discrepancy or omission. Providing the manual immediately and updating the risk log assumes the manual was a known requirement and doesn't address the root cause of its absence.