IDC3539I KEYS AND/OR RECORDSIZE PARAMETER SPECIFIED FOR NON-EMPTY OBJECT
Explanation
The ALTER command specified the KEYS or RECORDSIZE parameter, but the cluster or alternate index contains data records.
System action
The object's catalog entry is not altered.
Programmer response
If you want to change key position and/or record size, you must delete, redefine, and reload the object.
Source
DFSMSdfp
Module
IDCAL01