8.1.1.45 KIX_USER_TRACE
This optional variable defines the type of traces, one trace file per connection or all traces in the same file.
KIX_USER_TRACE=SID represents one trace file per
connection. The other value is STD, in this case
traces will be in each stdout of server, if the variable is not set
to STD is assumed.
When you want to use transaction / command audit tool against multiple homonymous ART servers, SID should be used.
Parent topic: CICS Runtime Specific Environment Variables