13334: Gather: Invalid model value

This warning occurs when <Gather> receives a speechModel value that Twilio does not support, or when the selected language and model combination is not supported. When that happens, Twilio generates an error notification and the gather fails.

• The speechModel value is not one of the supported Gather model values.
• The selected language is not supported for the chosen model.
• A specific STT model was selected with a language and model combination Twilio does not support.

• Set speechModel to a supported value documented for <Gather>.
• If you use a specific STT model, verify that the language and model combination is supported before you retry.
• Review the resulting error notification to confirm which model value Twilio rejected.

• TwiML Voice: <Gather>
• Error and Warning Dictionary