Maryland Family Law Section 10-344

      (a)      When a support order or income withholding order issued in another state is registered, the registering tribunal shall notify the nonregistering party. Notice must be given by first-class, certified, or registered mail or by any means of personal service authorized by the law of this State. The notice must be accompanied by a copy of the registered order and the documents and relevant information accompanying the order.

      (b)      The notice must inform the nonregistering party:

            (1)      that a registered order is enforceable as of the date of registration in the same manner as an order issued by a tribunal of this State;

            (2)      that a hearing to contest the validity or enforcement of the registered order must be requested within 20 days after the date of mailing or personal service of the notice;

            (3)      that failure to contest the validity or enforcement of the registered order in a timely manner will result in confirmation of the order and enforcement of the order and the alleged arrearages and precludes further contest of that order with respect to any matter that could have been asserted; and

            (4)      of the amount of any alleged arrearages.

      (c)      Upon registration of an income withholding order for enforcement, the registering tribunal shall notify the obligor's employer pursuant to Subtitle 1 of this title.