The IATF Auditor Guide 5th edition has been updated to align with Rules 6th edition and adds a new section on auditing Corporate Scheme clients. The guide includes additional essential auditor competency requirements, such as audit nonconformity management and auditing top management processes. The document is organized in six distinct sections: Section 1 Readiness Assessment, Section 2 Audit Planning, Section 3 Site Audit and Nonconformity Management, Section 4 Corporate Scheme Audits, Section 5 Essential Auditing Competency Criteria, and Section 6 General Auditing Competency Criteria.