DFS4503A INVALID IMSID ON SYSIN RECORD
Explanation
An IMSID specified in a SYSIN record is invalid.
The IMSID must start in column 1, be 1-4 characters in length, contain
alphanumeric characters, and contain blanks in the rest of the record.
System action
The Global Online Change Utility fails.
Operator response
Correct the IMSID and run the DFSUOLC0
utility again.