If a return code of 4xx is returned and
SNAPDCB is specified, a SNAP macro is issued and the request made
to DFSMShsm is dumped. The dumped storage area will include the data
set name, volume serial number, and function requested.
If SNAPDCB and TEST=YES were specified, and there was an error
flagged in the MWERC, then a SNAP macro is issued and the MWE is dumped.