Trapping QSNDDTAQ errors in Cobol program

Hi,

I am an occasional Cobol user, and was wondering how I would go about
trapping an error returned by the QSNDDTAQ API called from a Cobol program.

We want to trap the condition when Data Queue is full (CPF950A) and go in a
DLYW before trying again.

I think calling a CL program from the Cobol to call the API, instead of
calling the API directly might work, but I have been told to check if it is
possible to do without adding a new CL program call.

I tried ON EXCEPTION clause, but that seems to trap only errors on the Call
command (program not found, parameter mismatch etc), so does not work in
this case.

Any suggestions, guidance will be greatly appreciated.

Vinay