Comprehensive and Detailed In-Depth Explanation:

Stage 1 Audit (ISO 9001:2015, Clause 9.2.2) is a documentation review to assess the readiness for a Stage 2 Audit. The auditor must document:

Observations that could lead to nonconformities, ensuring they are addressed before Stage 2.

Areas needing improvement, such as missing documented information or unclear process definitions.

While understanding the auditee’s main processes is important, documenting interviews is not a requirement at Stage 1.