Ariz. Rev. Stat. § 14-5431
Any person indebted to a protected person, or having possession of property or of an instrument evidencing a debt, stock or chose in action belonging to a protected person may pay or deliver to a conservator, guardian of the estate or other like fiduciary appointed by a court of the state of residence of the protected person, upon being presented with proof of his appointment and an affidavit made by him or on his behalf stating both: