The CA Gen runtime modules required by CA Gen generated batch applications running under JES are the following:
TIRARUNT, TIRBRTRZ, TIRBRUNB, TIRBURTZ, TIRIOVFI, TIRITIAZ, TIRMTQBZ, TIRORUNT, TIRRETCZ, and TIRTERBZ.
If your batch application is IMS DLIBATCH or IMS BMP, the TIRARUNI, TIRBRUNI, and TIRORUNI DLLs are also needed.
Depending on what functions are used by the action blocks, TIRDATXZ and TIRUPPRZ may also be needed. These must be included in the STEPLIB DD.
Having the Gen runtime load library in STEPLIB will assure all modules are available when processing.