---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/30755#article
headline: "30755: Brand Registration Failure: Unsupported country code"
url: https://www.twilio.com/docs/api/errors/30755
inLanguage: en
dateModified: 2026-10-27T13:08:36.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 30755: Brand Registration Failure: Unsupported country code

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when you submit a US A2P Brand registration with a business address country in `iso_country` that is not supported for that registration flow.

### Possible causes

* The `iso_country` value in the business address is not in the supported list for US A2P Brand registration.
* The country was entered in a format other than a two-letter ISO country code.
* The business was submitted through the wrong registration path. Sole Proprietor registration is only for businesses in the US or Canada without an EIN or Canadian Business Number.

### Possible solutions

* Verify the business address and submit the correct two-letter ISO country code in `iso_country`.
* If you are registering a Sole Proprietor Brand, confirm that the business is located in the US or Canada and is eligible for that registration type.
* If the business is not eligible for Sole Proprietor registration, use the Standard or Low-Volume Standard registration flow and provide the required business information for that business type.
* Update the Customer Profile or related registration information with the correct country details, then resubmit the Brand.
* If the Brand is already in a failed state, correct the upstream profile information first and then resubmit the Brand through Console or the API.

#### Additional resources

* [A2P 10DLC: Gather the Required Business Information](/docs/messaging/compliance/a2p-10dlc/collect-business-info)
* [Direct Standard and Low-Volume Standard Registration Guide](/docs/messaging/compliance/a2p-10dlc/direct-standard-onboarding)
* [Troubleshooting A2P 10DLC Registrations](/docs/messaging/compliance/a2p-10dlc/troubleshooting-a2p-brands)
* [Troubleshooting Sole Proprietor Brand Registration Failures](/docs/messaging/compliance/a2p-10dlc/troubleshooting-a2p-brands/troubleshooting-sole-proprietor-brand-registration-failures)
* [Troubleshooting A2P 10DLC Standard/LVS Brands](/docs/messaging/compliance/a2p-10dlc/troubleshooting-a2p-brands/troubleshooting-and-rectifying-a2p-standardlvs-brands)