Functional Group
A functional group is a group of messages. You can group messages of different types in one functional group.
A functional group begins with a functional group header (UNG segment), which contains internal routing identifiers, and ends with a functional group trailer (UNE segment).
In EDIFACT, an interchange can contain zero or more functional groups. An interchange without any groups is called an empty group. An empty group is useful if internal routing is not necessary.