Unless justice requires otherwise, an error in admitting or excluding evidence-or any other error by the court or a party-is not grounds for granting relief under Rule 83, or for vacating, modifying, or otherwise disturbing a judgment or order. At every stage of the proceeding, the court must disregard all errors and defects that do not affect any party's substantial rights.
Ariz. R. Fam. Law. proc. 86