Error code
30755: Brand Registration Failure: Unsupported country code
What this error means
The business address country isn't supported for the US A2P registration flow you used.
Causes, most likely first
iso_countrynot in the supported list.- Country submitted in a format other than a two-letter ISO code.
- Wrong registration path. Sole Prop is US/Canada only, for businesses without an EIN or Canadian BN.
Fields Twilio names for this error
Twilio’s page for this error names these submission fields:
iso_country
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
Submit the correct two-letter ISO code. If registering Sole Prop, confirm the business is genuinely US or Canada and eligible; otherwise use Standard / Low-Volume Standard with the required business information. Correct the Customer Profile first if the brand is already failed, then resubmit.
Timing and resubmission
No review window.
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.