If you manage multiple accounts, instead of logging in under multiple enterprise IDs, add all the accounts you manage to your Control Center enterprise ID. You'll be able to manage all your services in one place rather than having to manage services in different places.
To add one (or more) accounts to your enterprise ID:
If you get an account has already been assigned to the enterprise message, it's likely that the account you're trying to add already exists in Control Center. Contact your system administrator for access to the account.