Use these steps to determine who answered a system operator message.
Make sure your output will NOT print to a printer - these steps may produce a large spooled file that you can review online and then delete - don't waste paper.
Type DSPMSG and press F4:
Display Messages (DSPMSG)
Type choices, press Enter.
Message queue . . . . . . . . . > QSYSOPR Name, *WRKUSR
Library . . . . . . . . . . . *LIBL Name, *LIBL
Output . . . . . . . . . . . . . *print *, *PRINT
Change the Output line to *print.
Press Enter.
Type WRKSPLF.
Find the spooled file that looks like this:
Type a "5" by the file name, press enter.
These are the system operator messages since the last IPL (usually Sunday at 05:00 am). Type a B to go the bottom for the most current messages, then start paging up for what you are looking for. Or, if you know part of the exact message, you can do a search on the "Find" line and press F16 (it is case sensitive).
File . . . . . : QPDSPMSG
Control . . . . .
Find . . . . . . INQUIRY
In the above example, user HUNTERS answered the message.