Programmable Messaging | Aug. 07, 2025
[U.S. A2P 10DLC] Brand Registration - Authentication+ 2FA Verify & New Error Codes
We’ve made a key improvement to Authentication+ to support programmatically triggering a new 2FA verification email for A2P 10DLC Brand registrations that have failed.
Alongside the endpoint, we’re introducing a set of dedicated 2FA error codes that surface precise failure reasons and point you to the fastest remedy, so your users can complete brand verification with fewer support tickets and less manual work.
To learn more about Authentication+, check out our Support Article and Twilio API Docs.
Error Code | Message | Description |
Domain Ownership Could Not Be Verified | The domain used in the brand contact email could not be independently verified. | |
2FA Verification Expired | The 2FA verification link or token expired before being used. | |
2FA Email Undeliverable | The verification email could not be delivered to the brand contact. | |
2FA Verification Failed or Timed Out | The verification process was not completed. | |
Invalid Brand Contact Email Domain | The domain used for the brand contact email is not acceptable for Authentication+ (e.g., gmail.com). | |
2FA Code Expired | The verification code was not entered in time. |