SAP Message USMD2132 - Mass change not executed; assign a change request first

Diagnosis
You want to change master data in mass processing that has not yet beenassigned to a change request, but you did not select a change request inthe Select Change Request dialog box. You can only change masterdata if you assign it to a change request.

System Response
The mass change has not been carried out.

Procedure
Choose the Execute Changes pushbutton again and thenselect a change request that is assigned to you.