Indiana Code Title 31. Family Law and Juvenile Law § 31-18.5-6-7

(1) The issuing tribunal lacked personal jurisdiction over the contesting party.

(2) The order was obtained by fraud.

(3) The order has been vacated, suspended, or modified by a later order.

(4) The issuing tribunal has stayed the order pending appeal.

(5) There is a defense under Indiana law to the remedy sought.

(6) Full or partial payment has been made.

(7) The statute of limitation under section 4 of this chapter precludes enforcement of some or all of the alleged arrearages.

(8) The alleged controlling order is not the controlling order.

(1) stay enforcement of a registered support order;

(2) continue the proceeding to permit production of additional relevant evidence;  and

(3) issue other appropriate orders.