Alaska Request to Register Tribal Court IOWA Custody Order is a legal document issued by an Alaska tribal court to register an Indian Child Welfare Act (IOWA) custody order with the state. This document is used to ensure the enforcement of the tribal court's order in the state of Alaska, and to provide legal recognition of the custody order's validity within the state. There are two types of Alaska Request to Register Tribal Court IOWA Custody Order: Initial Request and Supplemental Request. The Initial Request is the initial document filed with the state of Alaska, and it includes a copy of the tribal court's custody order, a completed application form, and an application fee. The Supplemental Request is filed after the initial request is approved by the state, and it includes a copy of the tribal court's amended or modified order, a completed application form, and an application fee. Both the Initial and Supplemental Requests must be signed by the tribal court clerk and submitted to the Alaska Court System.