A DFSMShsm request was issued, but a DFSMShsm host with HOSTMODE=MAIN is not active. This message can also occur if you are using DFSMShsm in a test environment (which is established by issuing the DFSMShsm SETSYS DEBUG command).
System processing continues.
Start DFSMShsm. If you are executing DFSMShsm in multiple address spaces, start DFSMShsm with HOSTMODE=MAIN.
DFSMShsm
If the DFSMShsm SETSYS DEBUG command is issued prior to the STOP command, this message will be suppressed after DFSMShsm is no longer active.