When does a series of minor errors potentially result in a USPAP violation?

• A. When the series of errors affects the credibility of the results.
• B. When the errors are systematic but not credible.
• C. When the errors are only minor and isolated.
• D. When the errors are discovered after valuation.

Answer: (A)

Credibility of the results is the key idea. USPAP requires appraisers to produce conclusions that are credible and not misleading. A series of small mistakes can accumulate and undermine the trustworthiness of the valuation. When those minor errors, taken together, affect how trustworthy the results are, that situation can constitute a USPAP violation because the final conclusion no longer stands as credible. If the errors were truly isolated and have no impact on the overall conclusion, they are less likely to violate USPAP. Discovering errors after the valuation doesn't automatically remove responsibility for credibility at the time of reporting, though it may raise questions about diligence or disclosure.