Steps to Reproduce
- Go to Control Panel > Instance Settings > Users > Anonymous User.
- Change the User ID to configure a different Anonymous User.
- Save the configuration.
Expected: The form saves successfully and the new User's ID is reflected in the UI.
Actual: An error message is displayed and the form fails to save:
Error: An anonymous user is already defined for the company: 20098
Furthermore, if you delete Anonymous Anonymous, you continue to see this error, even though the configured User has been deleted.