# Example of ESB to TDQ

This IVP example illustrates how a TIBCO messaging client application initiates a request message that forces Substation ES to write the data into a TDQ with the CICS WRITEQ TD method.

The Substation ES delivers an acknowledgment to the IVP Sender Listener. In this example, the data is written to the Substation ES trigger TDQ. Therefore, Substation ES gets a trigger based on the defined search criteria for this trigger process and then delivers a reply to the IVP Sender Listener. In both directions, the Substation ES Transformer converts the data according to conversion rules in the recipe and trigger.

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