30755: Brand Registration Failure: Unsupported country code

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.

• 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.

• 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.

• A2P 10DLC: Gather the Required Business Information
• Direct Standard and Low-Volume Standard Registration Guide
• Troubleshooting A2P 10DLC Registrations