Arizona Revised Statutes Title 12. Courts and Civil Proceedings § 12-543. Oral debt;  stated or open account;  relief on ground of fraud or mistake;  three year limitation

1. For debt where the indebtedness is not evidenced by a contract in writing.

2. Upon stated or open accounts other than such mutual and current accounts as concern the trade of merchandise between merchant and merchant, their factors or agents, but no item of a stated or open account shall be barred so long as any item thereof has been incurred within three years immediately prior to the bringing of an action thereon.

3. For relief on the ground of fraud or mistake, which cause of action shall not be deemed to have accrued until the discovery by the aggrieved party of the facts constituting the fraud or mistake.