At project close with multiple suppliers, the project manager finds an unexpected financial balance remaining. What will help the project manager determine why this occurred?

A procurement audit is a structured review of the procurement process from planning through contract administration and closure. It helps identify successes and failures, including unexpected financial balances, by examining procurement documentation, payments, and performance. This audit would reveal discrepancies or efficiencies that led to the remaining funds. A project audit is broader, covering all aspects of the project, but a procurement audit specifically targets the financial aspects related to suppliers. Lessons learned document general project insights but don't provide a detailed financial reconciliation. Organizational process assets are inputs to processes, not a tool for analyzing financial discrepancies.