- Signal
- The recorded request differs from what the caller said, or the assistant repeatedly asks for the same detail.
- Investigate
- Compare the original speech, transcript and resulting action, with a suitable language reviewer when needed. Check terminology, background noise and the configured language rather than treating all errors as accent problems.
- Recovery check
- Adjust supported vocabulary, instructions or channel settings where available, then retest. Let the caller confirm consequential details and reach a person when the system remains uncertain.