There are a number of different reasons you may be receiving an error. You can find the list of errors and what to do about them here:
Pre-requisite error: You may be told that the pre-requisites prevent you from registering in one or more courses. This means you are missing a course from the previous semester required to take a current course. Contact your academic advisor to discuss your next steps.
Co-requisite error: You could be told you are not registered in the co-requisite course. This means there is a corresponding course you also need to add. Your academic advisor or academic chair can help you find the correct course.
Link error: You will get a link error if you register for a course requiring a corresponding lab. Speak with your academic advisor or academic chair to discuss availability for required labs.
Field of study error: A course may be reserved for a specific program or major. If this happens, you will be told your field of study prevents you from registering. Connect with your academic advisor for this error.
Time Conflict: This means you have selected two courses scheduled at the same time, and you need to adjust your choice. Connect with the Office of the Register for support with this error.
Closed Section: This means that the course section you selected is full. You'll need to adjust your choice. Your academic advisor can help you find a course offering with space.
Cohort registration error: This means you are attempting to register for a course that does not align with your assigned cohort or original admit term. If you are trying to register for a first semester course but are not a first semester student, you will be able to add or drop first semester courses starting one week before classes begin for the first semester. If you are a first semester student and receive this error, your student account may not be properly configured. Please contact the Office of the Registrar.
Current term specific errors: Review our current term specific errors and their status for issues that don't appear in the common registration errors listed above.