(a) An obligor may contest the validity or enforcement of an income withholding order issued in another state and received directly by an employer in this State by registering the order in a tribunal of this State 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 this State.
(b) The obligor shall give notice of the contest to:
(1) A support enforcement agency providing services to the obligee;
(2) Each employer 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.