Got the below issue when i am trying to assign a record to a Team via Action from Incident entity field update from CRM Webform,

“Principal User is missing prvReadIncident privilege“

I have searched in google for this error and found so many blogs and forums, majority of them saying, to change the Access Mode to Read-Write in System User entity for the user who is facing this issue. User is having Read-Write in my case, but still i faced this issue.

Finally i found that, somehow the Team got converted to Access Team, which i am assigning from Action.

I converted the team from Access Team to Owner Team.

Still, i faced the issue and found that there is no security role assigned to the Owner Team.

At last assigned required Security role to the Team and issue resolved.

Hope this helps and resolves your issue 🙂