Enter these commands from a CICS session to activate the new XMEOUT exit:
CEDA DEFINE PROGRAM(EVXMEOUT) GROUP(EVOGRP)
CEDA INSTALL PROGRAM(EVXMEOUT) GROUP(EVOGRP)
CECI ENABLE PROGRAM(EVXMEOUT) EXIT(XMEOUT) START
The CECI ENABLE command must be executed again each time CICS is restarted unless it is incorporated in to a CICS Program Load Table.