I am the Tech in ManageEngine and assigned as SiteAdmin including 2 other SiteAdmin, along with this we have 10 regular site technicians. Somehow, when I logged in today I don't see any admin rights, however I checked with another SiteAdmin to make sure the roles are assigned right to my user id and they are. We tried to re-add the roles but still giving us the same error. Then we found that every technician has a domain assigned under their profile in Manage Engine in Technician section, somehow the domain is selected as "none" we tried changing domain but it gives an error 

"Unable to save technician : Login with same name already exists. Please provide different value for Login Name."

Please help to resolve this ASAP