12-344. Costs upon splitting of action Where a plaintiff brings in the same court several actions against the same defendant for claims which should have been joined, he shall recover the costs of one action only, and the costs of the other actions shall be adjudged against him unless sufficient reasons appear to the court for instituting several actions.
Arizona Legal Code
§ 12.344
Source: https://www.azleg.gov/ars/12/00344.htm· Version 2026