Error code
30451: Toll-Free phone number verification unable to process - address invalid
Correctable and resubmittable. Stated by: Twilio error page for this code.
What this error means
The submission never reached review, the business address failed validation up front.
Causes, most likely first
- Not a valid US or Canada address.
- State/province invalid or inconsistent with the rest of the address.
- Street, house number, or unit info invalid/incomplete.
- City or postal code invalid or mismatched.
- Multiple address fields wrong at once.
How to fix it
If your numbers are managed by a platform
If your numbers sit inside a reseller platform, for example LeadConnector numbers inside GoHighLevel, you do not have access to the Twilio Console, and the interface shows the rejection without the code. Ask that platform's support team for the Twilio rejection error code, in writing, before you change anything. You can also read it yourself from your browser, which is faster: see how to get the code.
The substance of the fix is yours to make: the business details, the website, and the opt-in flow described in the Twilio path all belong to you, not to the platform. Make those changes first, confirm they are live, then ask support to resubmit. A resubmission filed before the underlying facts change will fail again on the same reason.
If you own the Twilio account
Correct businessStreetAddress, businessStreetAddress2, businessCity, businessStateProvinceRegion, businessPostalCode, businessCountry so they describe one real location, then resubmit. Use the resubmit flow inside the edit window rather than deleting, Twilio explicitly says not to delete the request just to fix an address.
Timing and resubmission
Not a review rejection, it never entered review. Fix and resubmit inside the edit window. Deleting puts you in the new-submission queue unnecessarily.
Two ways forward
Have it handled for you
A2P registration is handled for you on Growth at $597/mo and on Scale at $1,197/mo. Registration, resubmissions, and the compliance work behind them are included.
Fix it yourself
Send your email and we will send the fix playbook for registration rejections.
Verified against Twilio documentation on 2026-08-10.