You can connect to CICS® or IMS™ services using WebSphere® MQ, by receiving messages from, or sending messages to, the corresponding MQ Bridge.
You can connect your ESB to CICS or IMS services using MQ. For example, you can receive and process messages from CICS using MQ, or you can create and send a message to IMS using MQ.
When your ESB connects to CICS or IMS, you might need access to information carried in the MQ header structures defined by the MQ CICS bridge, or the MQ IMS bridge. This information is carried in the MQCIH for CICS, or the MQIIH for IMS. You can access this information by using the Custom Mediation primitive, or the MQ Header Setter mediation primitive. You can also create or modify header information.