Unless waived by the court for good cause shown, the personal representative shall give written notice to all interested persons of the filing of an account with the court. Exceptions to an account must be filed with the register within 20 days of the approval of the account by the court. Exceptions may not be filed concerning an item which has become final and binding under § 7–502 of this subtitle. Copies of exceptions shall be mailed by the exceptant to the personal representative.