Thank you for reaching out with your request to add a user to your brand.
We are unable to process this request because your brand account and/or the account for the user you wish to add have an unhealthy status. We require all relevant accounts across all marketplaces to have a healthy status to add a role to a brand.
To find more information about why an account has an unhealthy status, please visit the Account Health page in Seller Central for all your accounts across all marketplaces and ask the user to do the same. This will allow you to identify where the concern is and how to fix it.
Once you have rectified the concerns and all accounts are healthy, you can re-submit this request by opening a new case using the Brand Registry Contact Us page in your account. Select 'Update your brand profile' and then click on 'Update role for user account'.