Past Term Registration Checking
ACEweb has the ability to prevent a student from registering in a course that they have previously taken.

- You must be on ACEweb 3.5 with build .55 or higher
- You will need to set the StopMultiReg setting in your aceweb.ini to "ON"

The catalog code (cocatcode) is the field that is “checked” against for previous registrations:
So if enabled, a student will not be able to enroll in a course that has a matching catalog code from their past courses taken:
ACEweb will display the remaining number of seats at that fee level: