# Example of ESB Request DPL XCTL

This IVP example illustrates how a TIBCO messaging client application initiates a request message to start a CICS program with the CICS XCTL method through Substation ES.

The CICS program replies by writing the reply information into the Substation ES trigger TDQ. Substation ES gets the trigger based on the defined search criteria for this trigger process and then delivers the reply and an acknowledgment to the IVP Sender Listener. In both directions, the Substation ES Transformer converts the data according to the selected conversion rules in the recipe and trigger.

Copyright © TIBCO Software Inc. All rights reserved.