|  |  | 
        
          | 
            
              | A group of segments giving references and where necessary, their dates relating to the whole message, e.g., a contract, dispatch advice number, etc. |  |  | 
        
          |  |  | 
        
          | 
            
              |  | Function: |  
              |  | To specify date, and/or time, or period. |  | 
        
          |  |  | EAN | * |  | 
        
          |  |  |  | M |  |  | 
        
          |  | 
            
              |  | Date or time or period function code qualifier |  |  | M | * |  | 
        
          |  | 
            
              |  | Date or time or period value |  |  | R |  |  | 
        
          |  | 
            
              |  | Date or time or period format code |  |  | R |  | 
            
              | 102 |  | = | CCYYMMDD |  
              | 718 |  | = | CCYYMMDD-CCYYMMDD |  | 
        
          | 
            
              |  | Segment Notes: |  
              |  | This segment is used to specify dates or periods relating to the references given in the previous RFF segment. 
 Example:
 DTM+171:20021001:102'
 |  |