Change indicators


    * BGM    BEGINNING OF MESSAGE

      Function: To indicate the type and function of a message and to
                transmit the identifying number.

010   C002  DOCUMENT/MESSAGE NAME                                 C  
      1001   Document/message name, coded                         C  an..3
      1131   Code list qualifier                                  C  an..3
      3055   Code list responsible agency, coded                  C  an..3
      1000   Document/message name                                C  an..35

020 * C106  DOCUMENT/MESSAGE IDENTIFICATION                       C  
      1004   Document/message number                              C  an..35
      1056   Version                                              C  an..9
      1060   Revision number                                      C  an..6

030   1225  MESSAGE FUNCTION, CODED                               C  an..3

040   4343  RESPONSE TYPE, CODED                                  C  an..3