OPSSLGP STC Failing at start-up

Document ID : KB000124199
Last Modified Date : 08/01/2019
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Issue:
After installing and configurating the CA OPS Unix System Services and adding definitions to start OPSSLGP when the OPSMAIN address space starts, and I get the following error:

*CAINEXIT08W STEP NOT AUTHORIZED; ALREADY AUTHORIZED

In the OPSSLGP joblog you will find the message :
 
CEE5101C During initialization, the callable service BPX1MSS failed. The system return code was 0000000156 , the
         reason code was 0B0C00FD . The application will be terminated..
Resolution:
The reason code means JRSAFNoGID: The user ID is in a group that has no GID
Action: Create an OMVS segment and assign a GID to the group.