Sinch 10DLC Campaign Registration API

10DLC is a system in the United States that allows businesses to send Application-to-Person (A2P) messaging via 10-digit-long-codes (10DLC). It uses a dedicated 10-digit telephone number allocated within the North American Numbering Plan (NANP). In order to register for a 10DLC campaign, you need to have a 10DLC enabled brand. Create a 10DLC enabled brand before you start, see [Brand Registrations](https://developers.sinch.com/docs/10dlc-registration/api-reference/10dlc-registration/tag/Brand-Registration/) for more info. Before you launch your 10DLC message program, Sinch must review your campaign. We make sure your message program aligns with carrier and industry requirements. Principally we look for alignment with the [CTIA 2023 Messaging Principals & Best Practices](https://community.sinch.com/t5/SMS/CTIA-Messaging-Principles-and-Best-Practices/ta-p/7087/highlight/true). If your campaign does not meet these requirements, we will reject it. If we do reject it, you will need to make changes to the campaign and resubmit it for Sinch to review again. It's important to understand [10DLC compliance requirements](https://community.sinch.com/t5/10DLC/10DLC-Compliance-Requirements-and-Guidance/ta-p/10706) as well as other best practices. You should also know the [most common reasons why Sinch may reject your campaign](https://community.sinch.com/t5/10DLC/Why-was-my-campaign-rejected/ta-p/15408) . We want to help you get your campaigns approved the first time. Then you can get your message program up and running right away!