Common Registration Errors

If you don't find your error listed below, please contact registrar@rice.edu.

Error Message What it Means What You Should Do
Time conflict with [CRN] You have attempted to enroll in a class which has a time conflict with another of your classes. ESTHER does not allow simultaneous enrollment in classes with overlapping meeting times (such as a Mon/Wed/Fri 1:00-1:50 class and a Mon 1:00-4:00 class) or double-booking (registering for two classes which meet at the same time). You must drop the conflicting class before being able to register for the other. If you have a legitimate reason to enroll in overlapping or double-booked classes, you must complete a Special Registration Form (Undergraduate or Graduate) and obtain the signatures of the instructors of all classes involved in the time conflict.
CORQ_CHEM 124 Req This course has a co-requisite course that you have not yet registered for. You must also register for the corequisite course indicated. (In this case CHEM 124.)
Prerequisite and Test Score This course has a pre-requisite that you have not yet completed. You must take the pre-requisite before registering for this class, or obtain permission from the instructor via the Special Registration Form (Undergraduate or Graduate).
Closed Section You have attempted to register for a course which is unavailable. Check enrollment counts and/or determine if instructor permission is required prior to registering for this course.
Reserved Closed You have attempted to register for a course that is full, and has a waitlist which is at capacity. Check enrollment counts and/or determine if instructor permission is required prior to registering for this course.
Course is not available for registration at this time. You have attempted to register for a course which has restricted admittance to certain students. Consult the Course Schedule for more information regarding these restrictions.
Duplicate CRN You have attempted to register for the same CRN twice. Check to make sure you have entered the correct CRN(s).
DUPL CRSE with SEC-22869 You have attempted to register multiple sections of the same course. Check to make sure you have registered for the correct course(s).
Maximum Hours Exceeded You have attempted to register for more hours than you are approved to take. Reduce your course load. Continuing students may petition the Office of Academic Advising to increase your course load. (New matriculants not eligible.)
Registration changes are not allowed. Course status dates not within range for part of term. You have attempted to add/drop a course that has a restricted add/drop window. Consult with the department that administers the course. For example, Management course conflicts should be directed to the Jones School.