I found the required information for PTFs required for Common Services, but not the value for ENF statement - CICSREL(66,67,69) Not sure if I can assume 71.
The installation of the CAIENF/CICS intercept in a CICS region requires the CAS9Cxx module where xx identifies the CICS release. The modules are distributed in the CAW0LOAD data set. These intercepts are used by either CA ACF2 or CA Top Secret to establish a security interface for the CICS region(s)
ENF r14.1 used to protect CICS 5.4 regions with either CA ACF2 or CA Top Secret in a z/OS environment.
The necessary maintenance for CICS 5.4 can be found by referring to the CICS Transaction Server Compatibility Matrix available on CA Support Online