| Pos |  | Tag | Name | S | R | Repr |  | Notes | 
        
          | 010 |  | 0065 | 
            
              | Message type |  
              | Code identifying a type of message and assigned by its controlling agency. |  | M | 1 | an..6 |  |  | 
        
          | 020 |  | 0052 | 
            
              | Message version number |  
              | Version number of a message type. |  | M | 1 | an..3 |  |  | 
        
          | 030 |  | 0054 | 
            
              | Message release number |  
              | Release number within the current message type version number (0052). |  | M | 1 | an..3 |  |  | 
        
          | 040 |  | 0051 | 
            
              | Controlling agency |  
              | Code to identify the agency controlling the specification, maintenance and publication of the message type. |  | M | 1 | an..2 |  |  | 
        
          | 050 |  | 0057 | 
            
              | Association assigned code |  
              | A code assigned by the association responsible for the design and maintenance of the message type concerned, which further identifies the message. |  | C | 1 | an..6 |  |  |