EN 1687 : 1995

Foreword
1 Scope
2 Normative references
3 Definitions
4 Requirements
  4.1 Data segment clarification
      4.1.1 Header section
      4.1.2 Detail section
      4.1.3 Summary section
  4.2 Message structure
      4.2.1 Branching diagram
      4.2.2 Segment table
  4.3 Data segment index
Annex A (informative) Additional information
      A.1 Field of application
      A.2 Principles

Defines the United Nations Standard Purchase Order Message to be used in Electronic Data Interchange (EDI) between trading partners involved in administration, transport and commerce.