# 13326: Gather: Invalid input value

Log Type: APPLICATION

Log Level: WARNING

## Description

This warning occurs when `<Gather>` receives an unsupported `input` value. `<Gather>` accepts `dtmf`, `speech`, or `dtmf speech`, and uses `dtmf` by default when you do not set `input`.

### Possible causes

* The `<Gather>` `input` attribute is set to a value other than `dtmf`, `speech`, or `dtmf speech`.
* The `input` value is formatted incorrectly or does not match the supported combined value exactly.

### Possible solutions

* Update `<Gather>` so the `input` attribute uses one of the supported values: `dtmf`, `speech`, or `dtmf speech`.
* Remove the `input` attribute if you want `<Gather>` to use its default `dtmf` behavior.
* If you need both keypad and speech input, use the documented combined value exactly.

#### Additional resources

* [TwiML Voice: `<Gather>`](/docs/voice/twiml/gather)
* [Debugging Your Twilio Application](/docs/usage/troubleshooting/debugging-your-application)