8:34Resumo. GoHighLevel requires non-US businesses to register their brand and campaign through the Trust Center before using a US phone number for SMS. The process involves purchasing a US number at the sub-account level, locating your country-specific business registration number from the relevant government registry, and submitting your business and contact details for A2P approval. Each country, including Canada, Australia, New Zealand, the EU, and Hong Kong, uses a distinct identifier that must match your official registration exactly.





