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Return to EDIFACT 40000 Segments page. UNH - Message header UN/EDIFACT Syntax Version 4 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, coded M an..3 0057 Association assigned code C an..6 0110 Code list directory version number C an..6 0113 Message type sub-function identification 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 050 S016 MESSAGE SUBSET IDENTIFICATION C 1 0115 Message subset identification M an..14 0116 Message subset version number C an..3 0118 Message subset release number C an..3 0051 Controlling agency, coded C an..3 060 S017 MESSAGE IMPLEMENTATION GUIDELINE IDENTIFICATION C 1 0121 Message implementation guideline identification M an..14 0122 Message implementation guideline version number C an..3 0124 Message implementation guideline release number C an..3 0051 Controlling agency, coded C an..3 070 S018 SCENARIO IDENTIFICATION C 1 0127 Scenario identification M an..14 0128 Scenario version number C an..3 0130 Scenario release number C an..3 0051 Controlling agency, coded C an..3 Pos Position M/C Mandatory or Conditional Repr. Representation (Data or Content Type) Notes: 1. Data element S009/0057 is retained for upward compatibility. The use of S016 and/or S017 is encouraged in preference. 2. The combination of the values carried in data elements 0062 and S009 shall be used to identify uniquely the message within its group (if used) or if not used, within its interchange, for the purpose of acknowledgement. Segment UNH is used in the following messages: AUTACK CONTRL KEYMAN 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. Return to EDIFACT 40000 Segments page.