Certain EDI messages have alternate batch and interactive forms, depending upon whether they are used between systems that have real-time connections. The Interactive setting causes the interactive form to be used, if available. For example, in EDIFACT, this would cause the normal envelope of UNB/UNH/UNT/UNZ to be replaced by UIB/UIH/UIT/UIZ. Valid for EANCOM, EDIFACT, and IATA only.