What are the duties of a plan administrator upon receipt of a domestic relations order by the plan?

Upon receipt of a domestic relations order, the plan administrator is required to promptly notify the affected participant and each alternate payee named in the order of the receipt of the order and to provide a copy of the plan's procedures for determining whether a domestic relations order is a QDRO. Notification should be sent to the address included in the domestic relations order. The administrator is required to determine whether the order is a QDRO within a reasonable period of time after receipt of a domestic relations order and to promptly notify the participant and each alternate payee of such determination (ERISA § 206(d)(3)(G)(i); IRC § 414(p)(6)(A)).