I'm looking for the right values to set in comparison here.

[('user_id', '=', user.id) shows the own created contacts/assigned contacts. I was working with that since I want to restrict the access to the contact module.

I split the internal user record rules, so that the "private adresses" rule doesn't interfere but I'm still getting the 500 error when I try to login with my test user. It has probably something to do with the fact that the user can't access their own information. So I need to restrict all contact EXCEPT themselves. Any ideas?