|  | 1 | 
            
              | Status 1 version |  
              | Message approved and issued as a status 1 (trial) message. (Valid for directories published after March 1990 and prior to March 1993). |  | 
        
          |  | 2 | 
            
              | Status 2 version |  
              | Message approved and issued as a status 2 (formal recommendation) message. (Valid for directories published after March 1990 and prior to March 1993). |  | 
        
          |  | 4 | 
            
              | Service message, version 4 |  
              | Service messages approved and issued as a part of ISO 9735/Version 4, for use with that version of the syntax. Notes:
 1. For earlier versions of the UN/EDIFACT CONTRL message, each published by the UN as a stand-alone message, the version number to be used is specified in the message documentation.
 |  | 
        
          |  | 88 | 
            
              | 1988 version |  
              | Message approved and issued in the 1988 release of the UNTDID (United Nations Trade Data Interchange Directory) as a status 2 (formal recommendation) message. |  | 
        
          |  | 89 | 
            
              | 1989 version |  
              | Message approved and issued in the 1989 release of the UNTDID (United Nations Trade Data Interchange Directory) as a status 2 (formal recommendation) message. |  | 
        
          |  | 90 | 
            
              | 1990 version |  
              | Message approved and issued in the 1990 release of the UNTDID (United Nations Trade Data Interchange Directory) as a status 2 (formal recommendation) message. |  | 
        
          |  | D | 
            
              | Draft version/UN/EDIFACT Directory |  
              | Message approved and issued as a draft message (Valid for directories published after March 1993 and prior to March 1997). Message approved as a standard message (Valid for directories published after March 1997). |  | 
        
          |  | S | 
            
              | Standard version |  
              | Message approved and issued as a standard message. (Valid for directories published after March 1993 and prior to March 1997). |  |