if you look at the extended message text (F1 on the message) you would see this:
Display Formatted Message Text
Message ID . . . . . . . . . : CPF33DF
Message file . . . . . . . . : QCPFMSG
Library . . . . . . . . . : QSYS
Message . . . . : Internal data area for opened spooled files destroyed.
Cause . . . . . : An internal data area used by an Application Program
Interface (API) has been destroyed.
Recovery . . . : End the job under which the API is running and try the
request again. If the condition immediately repeats itself, use the Analyze
Problem (ANZPRB) command to report the problem.
so you can end that job & run again and if the problem occurs again (or even now if desired) do a WRKPRB and look to see what is there. you may or may not have to call IBM if restarting the job doesn't work. you might also want to look at the problem's symptom string and do a Google search to see if there's anything out on the interwebs that would point you in the proper direction.