(a) To make a request for assistance under this article, a party shall submit the request in writing to the Bureau for Child Support Enforcement on a form provided by the bureau. The written request form shall include all of the requesting party's information known to the party that is relevant to determine the child support amount. The request shall be accompanied by:
(1) A copy of the order being modified or, in the discretion of the bureau, information sufficient to permit the bureau to retrieve or identify the order;