For example, on https://github.com/mui/mui-x/issues/17555 <img width="746" alt="Image" src="https://github.com/user-attachments/assets/c229e1c2-55c1-4cd4-afbf-ebe03372991b" /> this user has a private activity https://github.com/jpullich <img width="604" alt="Image" src="https://github.com/user-attachments/assets/5c685c6f-e778-4e0a-bef3-965919168b11" /> instead of showing errors, we could have a custom state for it.