An account owner may change the designated beneficiary so long as the new designated beneficiary is a member of the family, as defined in § 529 of the Code, A.R.S. § 15-1871(8) or both, of the previously named designated beneficiary. The account owner must certify and provide to the financial institution the name, address, social security number, and relationship of the new designated beneficiary to the previously named designated beneficiary on a form prescribed by the financial institution and approved by the Treasurer. The change shall be effective upon the financial institution's receipt of such certification.
Ariz. Admin. Code § R2-13-203