Ariz. Rev. Stat. § 25-1055
A. A child custody determination issued by a court of another state may be registered in this state, with or without a simultaneous request for enforcement, by sending to the appropriate court in this state all of the following:
B. On receipt of the documents required by subsection A of this section, the registering court shall:
C. The notice required by subsection B, paragraph 2 of this section must state that:
D. A person seeking to contest the validity of a registered order must request a hearing within twenty days after service of the notice. At that hearing, the court shall confirm the registered order unless the person contesting registration establishes any of the following: