BSYR124E Invalid command - Please enter an "R" to rename all the BSDS
or Active log data sets in the list or "M" to move all the data sets.
Explanation
An invalid command was entered on the heading line.
User response
Enter R to rename all of the BSDS or active log
data sets listed. This will be done by specifying a new high-level
qualifier. Enter M to move all of the BSDS or active log data sets
listed.