The inclusion of the clause stating that engagements are conducted in conformance with the International Standards for the Professional Practice of Internal Auditing can be justified if internal audit activity policies and engagement records provide relevant, sufficient, and competent evidence that the statement is correct. This evidence shows adherence to the Standards in audit planning, execution, and reporting, ensuring the quality and reliability of audit results as per the Standards' requirements.

International Standards for the Professional Practice of Internal Auditing; guidelines on quality assurance and improvement programs.