User sees message " 'You are not authorized for this Assignment."

User sees message " 'You are not authorized for this Assignment."

(1) User is allowed to access to any assignment only if he is the maker, checker or approver, 
(or)
(2) If the user is the supervisor for maker, checker, or approver. 

If the user's role is not any of the above, then the user will see the message "'You are not authorized for this Assignment."