Setting Up CICS FCT Security

Document ID : KB000051214
Last Modified Date : 14/02/2018
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How do you setup FCT security in a particular CICS region without affecting other CICS running within the same CPU/LPAR?

What is the impact of CA Top Secret CICS facility parameter RES/NORES and RESSEC=YES.




If using FACMATRX=NO, the CICS SIT parameters control the CICS security including the RESSEC parameter on the PCT definitions.

To secure FCTs (DDNAME):

  • Set XFCT SIT parameter to XFCT=YES
  • and in the PCT RESSEC (YES)
  • DSNCHECK CICS facility control option must be set to NO.

Only the CICS regions with the CICS SIT parameters set, will be impacted.

If using FACMATRX(YES), CICS security is controlled by the CA Top Secret CICS FACILITY control options (XFCT, XPCT, XPPT?etc) instead of the CICS SIT parameters.

Please be careful when making changes to any of the CA Top Secret CICS FACILITY control options. All CICS regions sharing the same FACILITY name will be impacted by any changes to the CA Top Secret CICS FACILITY control options.


Additional Information:




The changes can be done with TSS MODI command.

To keep the changes permanent, please make the changes in your CA Top Secret parameter file member TSSPARM0 with CA Top Secret r15.0

With CA Top Secret r16.0, if you use the new control option FACSTOR(YES) you don't need to update your TSSPARM0, because the FACILITY is stored

and automatically updated within the VSAM companion file. 


For Ca Top Secret r16.0 go to site; signon; choose your product CA Top Secret for z/OS - 16.0; click on "using" link; click on


"Specifying Control Options to Modify Your Security Environment" for more details about the FACSTOR() control option.