13329: Gather: Invalid partialResultCallbackMethod value

This warning appears when <Gather> receives a partialResultCallbackMethod value that is not GET or POST. The partialResultCallbackMethod attribute controls which HTTP verb Twilio uses to request the partialResultCallback URL, and its default value is POST.

• The partialResultCallbackMethod attribute was set to a value other than GET or POST.
• The request used a misspelled, unsupported, or otherwise invalid HTTP method value for partialResultCallbackMethod.

• Set partialResultCallbackMethod to GET or POST.
• If you do not need a custom method, omit partialResultCallbackMethod so Twilio uses the default POST value.

• Error and Warning Dictionary
• TwiML Voice <Gather>