I hear this question frequently. Despite much effort, I have yet to find a case or a statute indicating that a custody order from another state must be registered before it can be enforced or modified. Of course, an action must be initiated to invoke the jurisdiction of our courts; something that can be done with a complaint, service of process and the normal rules of civil procedure. It is clear from UIFSA, Chapter 52C, that support orders from other states must be registered before a North Carolina court can enforce or modify the support order and UIFSA provides a clear statutory procedure for registration. There is no similar statutory requirement for child custody orders.