CAMERON, Justice.
I. JURISDICTION
Defendant, Aetna Casualty and Surety Co. (Aetna), appeals from a court of appeals decision reversing the trial court's order dismissing all claims against Aetna for failure of the claimant to join an indispensable party. We have jurisdiction pursuant to Ariz.Const. art. 6, § 5(3), A.R.S. § 12-120.24, and Ariz.R.Civ.App.R. 23.
II. ISSUE
We must answer the following question on review:
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