A CPA engaged to perform an audit of financial statements shall faithfully make a record of actions taken pursuant to these Regulations, and compile the record, together with relevant audit evidence obtained, into audit documentation.

Audit documentation is evidence of whether a CPA has duly fulfilled professional responsibilities, and is the basis upon which an audit report is prepared and audit opinions are expressed. All opinions, facts, and figures presented in an audit report shall be supported by sufficient, competent, and relevant evidence in the audit documentation.

Audit documentation shall be prepared and maintained in safe custody in accordance with TWSA230.