Use this to associate a user ID with a job when submitting for processing through the internal reader from CICS. 
| Setting  | 
Result  | 
| Any value  | 
The user ID that started the ES region is used in the job submission.  | 
| No value  | 
The CICS default user CICSUSER, or as specified by ES_USR_DFLT_CICS, is used in the job submission.  |