The peer reviewer selects audit files from the practice unit (PU) for review. For each file, the reviewer understands the audit approach and risks identified by the engagement team. The reviewer inspects documentation of risk assessment, planning, controls testing, and other audit procedures to evaluate compliance with standards. If documentation is insufficient or does not support the work done, it is a major weakness. The reviewer aims to determine if the PU has performed risk-based audits and obtained sufficient evidence as required.