What does a failed testing technique indicate?

A failed testing technique indicates that it does not necessarily mean failure of WCAG success criteria because a failure in testing can occur for several reasons that are not related to the actual accessibility of content. For instance, a testing tool might have limitations or may not accurately interpret the content or the context in which it is being used. There may also be instances where the technique itself is not robust enough to validate compliance reliably.

This means that while the technique identifies an issue, it doesn't definitively prove that the content fails to meet the WCAG criteria. Further review, testing, or different approaches may reveal that the content could still be compliant despite a failure in the testing technique. It emphasizes the importance of using a range of assessments and techniques to accurately evaluate web accessibility.