GTFTR

The GTFTR system initialization parameter specifies whether CICS can use the MVS generalized trace facility (GTF) as a destination for trace data.

GTFTR={OFF|ON}
This parameter controls whether any of the three types of CICS trace entry are written to GTF data sets. The three types are: CICS system trace (see the SYSTR parameter), user trace (see the USERTR parameter), and exception trace entries (which are always made and not controlled by a system initialization parameter).
OFF
CICS does not use GTF as a destination for CICS trace data.
ON
CICS uses GTF as a destination for CICS trace data. To use the GTF data sets for CICS trace data, you must have started GTF with the USR option, in addition to coding GTFTR=ON.

For information about GTF, see the z/OS MVS Diagnosis: Tools and Service Aids manual.