Automatic transaction initiation

If the front-end transaction is designed to be started by automatic transaction initiation (ATI) in the local system, and is required to hold a conversation with an LUTYPE6.1 session as its principal facility, the session has already been allocated when the transaction starts.

You can omit the SESSION parameter from commands that relate to the principal facility. If, however, you want to name the session explicitly in these commands, you should obtain the name from EIBTRMID.