UNB -

Interchange header
UN/EDIFACT Syntax Version 3 Segment List

	Function:	To start, identify and specify an interchange.
	This segment also occurs in the following versions of this standard: 30000, 40000, 40100

Pos			M/C	Repeat	Repr.
010	S001	SYNTAX IDENTIFIER	M	1
	0001	Syntax identifier	M		a4
	0002	Syntax version number	M		n1
020	S002	INTERCHANGE SENDER	M	1
	0004	Sender identification	M		an..35
	0007	Partner identification code qualifier	C		an..4
	0008	Address for reverse routing	C		an..14
030	S003	INTERCHANGE RECIPIENT	M	1
	0010	Recipient identification	M		an..35
	0007	Partner identification code qualifier	C		an..4
	0014	Routing address	C		an..14
040	S004	DATE/TIME OF PREPARATION	M	1
	0017	Date of preparation	M		n6
	0019	Time of preparation	M		n4
050	0020	Interchange control reference	M	1	an..14
060	S005	RECIPIENT'S REFERENCE, PASSWORD	C	1
	0022	Recipient's reference/password	M		an..14
	0025	Recipient's reference/password qualifier	C		an2
070	0026	Application reference	C	1	an..14
080	0029	Processing priority code	C	1	a1
090	0031	Acknowledgement request	C	1	n1
100	0032	Communications agreement ID	C	1	an..35
110	0035	Test indicator	C	1	n1

Pos	Position
M/C	Mandatory or Conditional
Repr.	Representation (Data or Content Type)

Change indicators
plus sign		An addition.
asterisk		Addition/substraction/change to a code entry for a particular data element.
hash or pound sign		Changes to names.
vertical bar		Changes to text for descriptions, notes and functions.
minus sign		A deletion.
letter X		Marked for deletion.