I don't think that It will be a necessity to have this paper if you strongly demonstrate in the interview that you know Auditing in depth. That said, I do believe that having attemped AAA will give you and the interviewer more confidence regarding your knowledge in the said field.
Moreover as I said you will anyways need to prepare Audit thoroughly before sitting in the interview so I believe that attempting AAA will be a recommended item.
I would also recommend you to get a second opinion as I don't sit on the other side of the table and as such my knowledge on recruitment process may be limited.
