BRMS in CL

I have a BRMS question for those familiar. We currently have a CL that does
our nightly processing and backups. We are going to replace the SAVLIB with
STRBKUBRM. The CL already runs in batch and the STRBKUBRM cmd will be
entered as SBMJOB(*no) so it will continue in the same CL. The problem is
this: We need to monitor messages for the STRBKUBRM so that, if there is no
tape loaded or a scratch tape is not loaded, the CL will continue and
complete the rest of the steps it needs to complete. We do not want to
replace the CL with a BRMS control group that has multiple *EXITs because
it can be run with different parameters. What MONMSGs are needed or how
else can we make this work? Thanks.

NF