Advanced Micro Devices

California law allows  a court to correct or vacate a contractual arbitration award if the arbitrators "exceeded their powers." (Code Civ. Proc., §§ 1286.2, subd. (d), 1286.6, subd. (b).) In Moncharsh v. Heily & Blase (1992) 3 Cal. 4th 1, 28, 832 P.2d 899, we held arbitrators do not exceed their powers merely by erroneously deciding a contested issue of law or fact; we did not, however, have occasion there to further delineate the standard for measuring the scope of arbitrators' authority. This case requires us to decide the standard by which courts are to determine whether a contractual arbitrator has exceeded his or her powers in awarding relief for a breach of contract.