Blackboard Ultra (Faculty) - CRN Changes

This article outlines the process for addressing Course Reference Number (CRN) changes in Blackboard Ultra, focusing on instructor visibility and potential enrollment impacts.

Understanding CRN Changes in Blackboard Ultra

The CRN is an automatically generated five-digit course number in CougarNet/Banner. This number is tied to a corresponding course in Blackboard. If the CRN changes, enrollments in the corresponding Blackboard course will be affected. For example, if a course section is deleted from CougarNet/Banner, students and instructors will be removed from the Blackboard course associated with the old CRN and will be enrolled in the Blackboard course shell with the new CRN.

The Blackboard course shell associated with the new CRN will be blank. The instructor will lose access to the content in the Blackboard course shell with the old CRN number.  If the instructor needs access to that content, they should send an email to the Blackboard Admin at bbhelp@siue.edu  and ask to be added to the Blackboard course shell associated with the old CRN number. 

Need Additional Support?

If you have any questions or need further assistance, please contact the ITS Help Desk:

This guide aims to provide useful information, but as technology changes, interfaces or steps might vary. Please use the Comment button to let us know if anything differs from your experience. Your feedback helps us keep this information accurate. Thank you!



Keywords:
Blackboard Ultra, CRN, Course Reference Number, Course ID, Course Management, Banner, Enrollment, Course Merge, Bb, Black board, Ultra 
Doc ID:
155637
Owned by:
Jeff P. in Southern Illinois University Edwardsville
Created:
2025-10-13
Updated:
2026-07-17
Sites:
Southern Illinois University Edwardsville