QDFTSVR job description question.

We have many QZDASOINIT and QRWTSRVR jobs by user QUSER using job
description QGPL/QDFTSVR. These create many many QPJOBLOG spool files each
day. Vary few of them have any true errors in them. I only want spool
files if something happens.
Would I be better off changing that job description or copying it and
changing the jobs/users to use the new one? Will be a lot easier to change
it. Being in QGPL I think it would be safe during our next upgrade.

I want a log if it fails but nothing if no errors.

It is currently set up like this.
Message logging:
Level . . . . . . . . . . . . . . . . . . . . : 4
Severity . . . . . . . . . . . . . . . . . . . : 0
Text . . . . . . . . . . . . . . . . . . . . . : *SECLVL
Log CL program commands . . . . . . . . . . . . : *YES

Thinking of changing to this. Main reason I do get some level 40 saying
library already in library list.
Message logging:
Level . . . . . . . . . . . . . . . . . . . . : 4
Severity . . . . . . . . . . . . . . . . . . . : 41
Text . . . . . . . . . . . . . . . . . . . . . : *SECLVL
Log CL program commands . . . . . . . . . . . . : *YES

Thanks