This bulletin provides guidance to help financial institutions mitigate potential risks arising from reliance on computer-based financial models that are improperly validated or tested. The guidance outlines key model validation principles and the Office of the Comptroller of the Currency’s (OCC) expectations for a sound model validation process. The expectations included in this bulletin supplement previously issued model validation guidance, generally found in the subject matter booklets of the Comptroller's Handbook or OCC Bulletins.

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