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UNH -

Message header UN/EDIFACT Syntax Version 3 Segment List

	Function:	To head, identify and specify a message.
	This segment also occurs in the following versions of this standard: 30000, 40000, 40100

Pos	Segment			M/C	Repeat	Repr.	Notes
010		0062	Message reference number	M	1	an..14
020		S009	MESSAGE IDENTIFIER	M	1
		0065	Message type	M		an..6
		0052	Message version number	M		an..3
		0054	Message release number	M		an..3
		0051	Controlling agency	M		an..2
		0057	Association assigned code	C		an..6
030		0068	Common access reference	C	1	an..35
040		S010	STATUS OF THE TRANSFER	C	1
		0070	Sequence of transfers	M		n..2
		0073	First and last transfer	C		a1

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

Segment UNH is used in the following messages:
CONTRL

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.

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