# Triggers

Triggers are BES (CICS or IMS) applications that initiate published data from their respective environments. Substation ES can publish data on behalf of these BES (CICS or IMS) applications.

In this case, the data is translated from the z/OS data format and packaged as a TIBCO Rendezvous or Enterprise Message Service message for delivery to an external application that is subscribing to this data.

Upon completion, an acknowledgment or result set is returned to Substation ES IVP listener through Substation ES.

Copyright © TIBCO Software Inc. All rights reserved.