- Sign in to Ans.
- Click the University name in the menu on the left.
- Click People in the menu at the top.
- Click Students in the switch.
- Click on the student you want to change the student number of.
- Click Settings in the switch.
- Go to the Danger zone-section and fill in the student number.
- Click Update.
Note: Only (department-)admins are able to change the student number.