HFPC0123E `keyword`=USER IS REQUIRED TO SPECIFY SUBCOMMAND: `subcommand`.

Explanation
 subcommand is specified in HFPSYSIN. However, subcommand
must be specified with keyword=USER.

System action
 If SCAN=YES is specified, the return code is
set to 8. If SCAN=NO is specified, the job ends with an abend code
of U3003. 

User response
 Correct the command set in HFPSYSIN, and rerun
the job.