# 30900: Campaign rejection - The campaign use case is ineligible for registration.

Log Type: APPLICATION

Log Level: ERROR

## Description

This error occurs when the A2P 10DLC campaign use case you submitted isn't eligible for the selected brand. You can only register a campaign with use cases that are available for that brand, and some use cases require additional carrier approval before registration can complete.

### Possible causes

* The submitted use case isn't supported for the selected brand. Use the A2P 10DLC Usecases subresource to retrieve valid use cases for a specific brand.
* The selected use case isn't supported by one or more carriers, or it requires additional carrier review before approval.
* The brand isn't qualified for the selected campaign use case.
* The selected campaign falls outside the allowed sub-use case bounds for the brand.
* A public, for-profit brand hasn't completed Authentication+, which is required before you can create a new campaign.

### Possible solutions

* Retrieve the available A2P 10DLC use cases for the brand and submit one of the returned `code` values.
* Review your campaign description, message flow, sample messages, and opt-in and opt-out details. Make sure they match the selected `us_app_to_person_usecase`.
* If the selected use case requires carrier review, wait for that review to complete or choose a different use case that accurately reflects your messaging program.
* If you are registering a public, for-profit brand, update the `brand_contact_email` to use a company domain, complete Authentication+, and retry campaign registration. If you didn't receive the verification email, resend it from the Console or retrigger it with the 2FA verification resource after a failed verification.
* If the campaign should be eligible and registration still fails, contact Support with your brand SID, Messaging Service SID, and campaign details.

#### Additional resources

* [Programmable Messaging and A2P 10DLC](/docs/messaging/compliance/a2p-10dlc)
* [A2P 10DLC - Usecases subresource](/docs/messaging/api/usapptopersonusecase-resource)
* [Troubleshooting A2P 10DLC Registrations](/docs/messaging/compliance/a2p-10dlc/troubleshooting-a2p-brands)