The Subsystem parameter that is present in many of the ESF audit events can be mapped using the following table:
| Subsystem number | Description | 
|---|---|
| 0 | None (for example, command line program) | 
| 1 | CICS | 
| 2 | IMS | 
| 3 | JCL | 
| 4 | ESMAC | 
| 5 | Web service | 
| 6 | BINP | 
| 7 | CGI | 
| 8 | MF Directory Server | 
| 9 | MF Communications Server | 
| 10 | ES Common Web Admin | 
| 11 | Data File Tools | 
When using syslog auditing, the Structured Data section of the emitted syslog message contains a SYSTEM key, which contains the value representing the high-level component that emitted the syslog message. For example, SYSTEM="ESDEMO" indicates that the message originated from the ESDEMO region, or SYSTEM="-MFDS-" which indicates the message originated from MFDS. Every event that originates from a specific region will have the same SYSTEM value, and an appropriate Subsystem number in the events.