The DMSSET job is run during the initial installation of the product and what does DMSSET do?
Release: Diskā¢ Backup and Restore
This command establishes the Parmlib name in the ISPF interface and the Files Data Set name. DMSSET updates the load module DMSPARMS.
This is the DMSSET member in the CCUWJCL lib: The tech doc for Activate Your System