Ariz. Rev. Stat. § 14-13106
A. When disclosing digital assets of a user under this chapter, the custodian, at its sole discretion, may do any of the following:
D. If a user directs or a fiduciary requests a custodian to disclose under this chapter some, but not all, of the user's digital assets, the custodian need not disclose the assets if segregation of the assets would impose an undue burden on the custodian. If the custodian believes the direction or request imposes an undue burden, the custodian or fiduciary may seek an order from the court to disclose any of the following: