FEPI

The FEPI system initialization parameter specifies whether or not you want to use the Front End Programming Interface feature (FEPI).

FEPI={NO|YES}

Valid values are as follows:

NO: FEPI support is not required. You should specify NO on this parameter (or allow it to default) if you do not have the feature installed, or if you do not require FEPI support.
YES: You require FEPI support, and CICS® is to start the CSZI transaction.

For information about what is required to run FEPI see FEPI analysis and planning.