60008: Unsupported Carrier

The request was received and failed due to the phone number's carrier not supporting this endpoint.

• Complete the Account Security Registration form to use this carrier.
• If you have completed the Account Security Registration form, contact Twilio Support to confirm that you are approved.
• If you have completed the Account Security Registration form and it has been approved, contact Twilio Support to rule out integration issues.
• If using Silent Network Auth, retry Verification using a channel other than Silent Network Auth for this end user.