The documentation refers to AT TLS Support and XCOMTRNG. But the mentioned member XCOMTRNG doesn't exist or even the XCOMTKDB member. Does this feature need PTFs in order to be enabled?
Release : 12.0
Component : CA XCOM Data Transport for z/OS
XCOM r12 added AT-TLS support with fix SO15002 ENHANCEMENT: SUPPORT AT-TLS ENCRYPTED NETWORK CONNECTIONS
For AT-TLS support with XCOM, download the fix and all of the pre-requisites to APPLY them.
Apply ALL maintenance to XCOM r12.0, since we have added other enhancements to the release. This will allow you to take advantage of those enhancements and prevent any problems that have been addressed.