Course Registration Hub

I received an error message that says “Available seats are reserved and you do not meet the reserve capacity criteria”. What does that mean?

Although a course may appear to have seat available, these may not be in a reserve capacity that applies to you. Reserve capacities maintain a specific number of seats for specific groups of students. The seats in the reserve capacity that applies to you may be full at this time. Please attempt to enroll in a different section and then check Mosaic after reserves are lifted, as seats in your preferred section may become available.

Please note that Chem 1A03 and 1AA3 are in high demand and priority is given to those students whose programs require these courses.

I received a ‘class xxxx is full’ error message. What do I do?

Please attempt to enroll in a different section, be sure to click View All to see all sections. You may be able to “swap” into your preferred section before the add/drop deadline in September, so check Mosaic often for availability.

There is no waitlist for sections that are full.

If you have a conflict that cannot be resolved by choosing another section, please indicate this and include a copy of your timetable when contacting macchem@mcmaster.ca.

I received a message that says I do not meet the prerequisites, what are my options?

1. If you are enrolling in Chem 1A03 be sure to also enroll in the co-requisite – WHMIS 1A00.
2. If you do not have Chem 12U or equivalent, consider taking Chem 1R03 in the winter term. Chem 1R03 will fulfill the prerequisite for Chem 1A03.
3. If you are entering Level I and are not in the Faculty of Science: complete and return a Course Permission Request form to macchem@mcmaster.ca
4. If you are enrolling in a course but have taken its antirequisite, like Chem 2OA3/2E03, you will require a waiver, please return a completed Course Permission Request form to macchem@mcmaster.ca
5. If you want to enroll in Chem 2OA3 but do not meet the grade requirement you may submit a Course Permission Request form – you may also consider enrolling in Chem 2E03

I received a ‘this course conflicts with another’ message. What do I do?

You may be attempting to register in a course with a core/lab/tutorial that has a conflicting date and/or time with another course you are already enrolled in. To resolve this error, you will need to select a different core/lab/tutorial, or different course. If you have a conflict between a required and elective course, you must ensure you register in the required course. If your conflict is between required courses and an alternate section cannot be found, please contact us with the course information. Also contact an academic advisor in your Faculty.

I received this error message - Department Consent Required. You must obtain permission to take this class. If you have a permission number, click Add Another Class, click the class link, enter the number and resubmit. What does this mean?

This section is being held on consent for specific groups of students (ex. exempt from laboratories, thesis students). Please check the Mosaic ‘Notes’ tab associated with this section to help determine if you are in this group, if so, please contact us again and indicate your specific group, your program, level, student ID number.

Thesis, placement and practicum students (3EP3, 3RP3, 4G12 and 4RP6) – you must have submitted an application form, signed by your supervisor, to  macchem@mcmaster.ca. Permission will be entered into your student record allowing you to enroll in your course; an email will be sent to you when the permission has been entered.

How long do I have to make course changes?

Each term has a Drop/Add deadline date which can be found in the Undergraduate Calendar, Sessional Dates. Fall and A/B course selection and changes must be completed by the deadline date in September, and Winter term changes can be completed until the deadline date in January. Deadline dates also apply for the spring and summer terms.

After I initially register for courses, how do I make changes?

The best tool to use to make changes is the Swap feature on Mosaic. This maintains your seat in your current course until the system can confirm a seat for you in the course you are trying to enroll in.

When do tutorials start?

You will be told during your first week of lectures when the labs and tutorials commence. They will not start before you have a lecture. Information on labs and tutorials will be announced on Avenue to Learn as well.

What is Avenue to Learn and how do I get access to it?

Avenue to Learn (A2L) is a web-based course management system designed to create a rich online learning environment for students. This platform includes features such as an electronic dropbox, an automated gradebook, discussion boards, and quizzes which lets you access information provided by your professors.

Avenue Username: same as Mosaic
Avenue Password: same as Mosaic
Avenue to Learn Help