The primary reasons are: 1) You have a hold which restricts you from registering (i.e. student owes money, or need to see your advisor), 2) Registration is not available due to a computer problem or the registration dates have passed, 3) The course you are trying to register for has a restriction or prerequisite which the system does not acknowledge you have met, or 4) the class is full or the system does not recognize that you have met the course requirement(s). This problem is likely to happen to Transfer or Graduate Students. If the class is full, then the instructor's signature is needed on an Add/Drop form. If a course requirement has not been met, then the Department Advisor over the course needs to sign a Course Authorization Form. This form must be submitted to the Registrar's Office located in TSC 246. Call the Registrar's Office if you have questions at 797-1116.