EDIFACT interchange envelope UNB and UNZ

An EDIFACT interchange begins with a UNB. It contains version release information, syntax information, and partner information. An interchange ends with a UNZ.

A UNB is defined as a prefix delimited type with the initiator UNB. Its delimiter is defined as Element Delimiter. The first component of the UNB type specifies the character set for text items, the Composite delimiter, and the version release.

Note: The default for the UNB delimiter is + and its default terminator is an apostrophe (') followed by a CR/LF. The default for the composite delimiter is set in the SyntaxID Composite type to a colon (:). You can change these defaults in the schemas, if necessary.