Logging facility messages
can be set to include the name of the SAS session, which might help
you to read the log and to diagnose problems.
To identify a SAS session
by name, you specify a session name as the value of the LOGAPPLNAME=
system option.
To display the value
of the LOGAPPLNAME= system option in a message, you must include the
S conversion character in the conversion pattern layout, using the
key App.Name.