Courses can be restricted to only allow the appropriate student population to enroll in the course. Restrictions can include prerequisite requirements, major/minor/option restrictions, class standing restrictions, and more.
Before beginning registration, verify that you meet all restrictions on courses you intend to register for. Course restrictions are listed in the schedule of classes. Don’t be caught off guard at the time of registration.
To request an explanation of—or an exception to—the restrictions on a course, contact the department offerring the course.