Issue
I'm trying to assign an issue or an alert rule to a team but I get the following error in the UI: You can only assign teams you are a member of
Applies To
All Organisations
Open Team Membership Disabled
Resolution
This is expected and intended behaviour to prevent IDOR vulnerability.
There are two options in this case:
Add the user to the team you want to assign the issue/alert to.
Enable Open Team Membership.