The format of the provided URL is invalid.
- Bad URL for phone number configuration
- Bad URL passed to outgoing call REST request
- Bad URL in Play or Redirect Verb Body
- Bad URL provided for a verb's action attribute
- Unsupported characters in auth portion of URL
Make sure you submit a fully qualified URL including:
- protocol (http:// or https://)
- file path
- properly url-encoded query parameters
Twilio must be able to reach this URL over the public Internet.