A chief audit executive (CAE) identifies that the internal audit activity lacks a necessary skill...

When an internal audit activity lacks the necessary skills to perform a requested consulting engagement, the most appropriate action according to IIA guidance is for the Chief Audit Executive (CAE) to decline the engagement request. This decision ensures the integrity and quality of the audit service, adhering to the standard of only undertaking work where the internal audit staff possesses or has the ability to obtain the necessary knowledge and skills.

The Institute of Internal Auditors (IIA) - International Standards for the Professional Practice of Internal Auditing.