Section 5–506. Contest by obligor.
(a) An obligor may contest the validity or enforcement of an income withholding order issued in another state and received directly by an employer or other source of periodic income in the commonwealth by registering the order in a tribunal of the commonwealth and filing a contest to that order as provided in Article 6 or otherwise contesting the order in the same manner as if the order had been issued by a tribunal of the commonwealth.
(b) The obligor shall give notice of the contest to:
(1) a support enforcement agency providing services to the obligee;
(2) each employer or other source of periodic income that has directly received an income withholding order relating to the obligor; and
(3) the person designated to receive payments in the income withholding order or, if no person is designated, to the obligee.