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        | Message reference number |  
        | Unique message reference assigned by the sender. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message identifier |  
        | Identification of the type, version, etc. of the message being
        interchanged. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message type |  
        | Code identifying a type of message and assigned by its
        controlling agency. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message version number |  
        | Version number of a message type. |  |  |  |  |  | 
  
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        | Message release number |  
        | Release number within the current message version number. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Controlling agency, coded |  
        | Code identifying a controlling agency. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Association assigned code |  
        | Code, assigned by the association responsible for the design and
        maintenance of the message type concerned, which further identifies the message. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Code list directory version number |  
        | Version number of the code list directory. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message type sub-function identification |  
        | Code identifying a sub-function of a message type. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Common access reference |  
        | Reference serving as a key to relate all subsequent transfers of
        data to the same business case or file. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Status of the transfer |  
        | Statement that the message is one in a sequence of transfers
        relating to the same topic. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Sequence of transfers |  
        | Number assigned by the sender indicating the transfer sequence of
        a message related to the same topic. The message could be an addition or a change to an
        earlier transfer related to the same topic. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | First and last transfer |  
        | Indication used for the first and last message in a sequence of
        messages related to the same topic. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message subset identification |  
        | Identification of a message subset by its identifier, version,
        release and source. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message subset identification |  
        | Coded identification of a message subset, assigned by its
        controlling agency. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message subset version number |  
        | Version number of the message subset. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message subset release number |  
        | Release number within the message subset version number. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Controlling agency, coded |  
        | Code identifying a controlling agency. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message implementation guideline
        identification |  
        | Identification of a message implementation guideline by its
        identifier, version, release and source. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message implementation guideline
        identification |  
        | Coded identification of the message implementation guideline,
        assigned by its controlling agency. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message implementation guideline version
        number |  
        | Version number of the message implementation guideline. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Message implementation guideline release
        number |  
        | Release number within the message implementation guideline
        version number. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Controlling agency, coded |  
        | Code identifying a controlling agency. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Scenario identification |  
        | Identification of a scenario. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Scenario identification |  
        | Code identifying scenario. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Scenario version number |  
        | Version number of a scenario. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Scenario release number |  
        | Release number within the scenario version number. |  |  |  |  |  | 
  
    |  |  |  | 
      
        | Controlling agency, coded |  
        | Code identifying a controlling agency. |  |  |  |  |  |