Prerequisites

The prerequisites for IBM® WebSphere® Liberty Profile, CICS® Transaction Server, and CICS Transaction Gateway.

The following products must be installed:
System requirements for IBM WebSphere Liberty Profile
IBM WebSphere Liberty Profile 8.5.5
System requirements for the CICS Transaction Server for IBM z/OS® servers
If IPIC connections are being used, CICS Transaction Server 3.2 or later is required because IPIC is not available in earlier releases of CICS.
TCP/IP services must be active in the CICS server. To activate these services, set the TCPIP system initialization parameter to YES. To check the status of these services, use the CEMT INQ TCPIP command and check that the status is open.
The CICS server must have access to a TCP/IP stack that is running on the same LPAR.
System requirements for CICS Transaction Gateway
CICS Transaction Gateway must be installed.
You must have a SERVER or IPICSERVER section defined in the configuration file so that CICS Transaction Gateway can communicate with the CICS region. The server name must be defined as the DefaultServer value in the PRODUCT section of the configuration file.