This bulletin discusses some of the international, federal, and state laws that apply, or might not apply, to international family support cases. Enforcement of an unincorporated separation agreement. a.An unincorporated separation agreement is enforced in the same manner as any other contract. A typical separation agreement includes the details of separation, property division, spousal support, and if there are children, child custody and support. First, your marriage must be valid in whatever country it occurred. Second, you must qualify under your state's basic residency requirements. The Hague Conference on Private International Law is the world organization for cross- border cooperation in civil and commercial matters. It is form AOC-CV-660, entitled "Petition for Registration of Foreign Custody Order.