Overview There are three basic structures in a UN/EDIFACT document. These structures are: • Interchange • Functional group • Message These structures are described in Chapter 1, EDIFACT Overview. You configure the guidelines for each of these structures. Once you have configured messages, the messages can be seen during the configuration of your trading partners. The messages can be allowed or disallowed, or the guideline itself can be overridden for a particular trading partner, if necessary. See Operation Bindings Tab for more information. T To properly mark the UN segments with a DSR mark, as required for proper acknowledgments generation, see the documentation provided with the EDISIM Standards Editor.