When enrolling in courses on Mosaic, you may receive one or more of the following error messages. Keep reading to find out how to handle these error messages:
Available seats are reserved, and you do not meet the reserve capacity criteria
This error message indicates that remaining seats in the course are reserved for particular student groups or programs, for example, students who require the course as part of their degree requirements. Reserved seats are released throughout the summer. All reserved seats are typically released by the first week of September for Fall term, and the first week of January for the Winter term. Check Mosaic for seat availability in the course periodically. You may be able to enroll as reserved seats are released, or if someone else drops the course.
Course is full or closed
If a course is full or closed, there are no seats available. The only way to enroll in a closed course is if someone else drops the course and a seat becomes available. Check Mosaic for seat availability in the course periodically.
The University does not use waitlists.
If the course is mandatory for your degree requirements, please contact your home Faculty office.
You do not meet the prerequisite for a Humanities course (but you know that you do meet the course prerequisite)
If the course is in the Faculty of Humanities, please contact the Humanities Academic Advising Office and we will investigate this for you. If a course requires Departmental Permission, you must seek permission directly from the department offering the course before you can enroll.
If the course is offered by a different Faculty, please contact that Faculty office directly.
You do not meet the prerequisite for a Humanities course
Several upper-level courses in the Faculty of Humanities have course prerequisites. Prerequisites ensure students have the appropriate background to succeed in a course.
If you do not meet the prerequisite for a course, but still wish to enroll, you must request a prerequisite waiver from either the course instructor or the relevant Department. Please contact the department in question (e.g. Department of History, Department of English, etc.) to request a prerequisite waiver.
Please note that even with an approved prerequisite waiver, enrollment is still pending seat availability in the course.
Course prerequisites are published annually in McMaster’s Academic Calendar under “Course Listings.”
Multi-term (A/B) Courses (e.g. FRENCH 1A06A/B)
Enroll in Part A (Fall) of a multi-term course. Mosaic will automatically enroll you in Part B (Winter). You must enroll in the same section (day / time) for the Fall and Winter terms.
You cannot enroll in multi-term courses through Plan by My Requirements or your Advisement Report. You must search for and enroll in the course using the Search for Classes button in your Mosaic Student Centre.