Hi 

I am trying to deactivate the users but the user is not part of escalationa and assaignment rules but still getting the below error. Please help me to deactivate the user.

You cannot deactivate a user who is receiving cases or notifications as part of your case assignment/escalation rules. <br/><br/>Click <a href="/ui/setup/Setup?setupid=Case">here</a> to view your case assignment / escalation rules. 

Thanks,