# Substation ES Installation IVPs

During the installation of Substation ES, IVP programs are supplied by default. To ensure that the network, Substation ES, and the back-end system (BES) interfaces (CICS and IMS) are correctly executing bidirectional communication with Substation ES, execute those IVP programs.

The installation default transformer configuration file contains all the entries required for executing Substation ES IVP programs.

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