The International Organization
for Standardization
ISO/TC 154/JWG 1 - ISO/UNECE joint working group for EDIFACT syntax
The United Nations Economic
Commission for Europe
Syntax 4 Release 3 ↓
How to use
Message list
Message description
Segment list
Segment description
Composite list
Composite description
Element list
Code list
Code list description
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Syntax 4 Part 11 > Segment cross reference
Cross reference segments (extended)
UNH
Message header
Used in message type
UNH
AUTACK
Secure authentication and acknowledgement message
CONTRL
Syntax and service report message for batch EDI
KEYMAN
Security key and certificate management message