This message is used to request a retransmission of a set of one or more messages generated by the application specified in RefApplID <1355>. The message can be used for five types of transmission requests:

  • 0 - retransmission of application messages for a specified application and sequence number range,
  • 1 - subscription to an application in order receive, for example, drop copy services,
  • 2 - request for the last application sequence number sent by an application,
  • 3 - request the valid set of application identifiers for which a user is authorized,
  • 4 - unsubscribe to one or more of applications

The Request message specifies the sequence number range using ApplBegSeqNum <1182> and ApplEndSeqNum <1183> for a given RefApplID <1355> to request messages for retransmission.


Tag Field Name Req'd Comments
Component Block - <StandardHeader> Y MsgType = BW
1346 ApplReqID Y Unique identifier for request
1347 ApplReqType Y Type of Application Message Request being made
Component Block - <ApplIDRequestGrp> N
Component Block - <Parties> N
58 Text N Allows user to provide reason for request
354 EncodedTextLen N
355 EncodedText N
Component Block - <StandardTrailer> Y