The internal audit function must be able to perform its assignments on its own initiative in all areas and functions of the bank based on the audit plan established by the head of the internal audit function and approved by the board of directors or audit committee. It must be free to report its findings and assessments internally through clear reporting lines. The head of internal audit must demonstrate appropriate leadership and have the necessary personal characteristics and professional skills to fulfill his or her responsibility for maintaining the function's independence and objectivity.