FIX Messaging - MC - Resend Request (Type 2)

The Test Request message forces a Heartbeat message from the delivery participant. 


Field Name


Data Type


Valid Values

Standard Header



MsgType = 2


The Message sequence number of first message in range to be resent.

16EndSeqNoMSeqNumThe Message sequence number of last message in range to be resent. If all messages subsequent to BeginSeqNo are required set EndSeqNo=0. 

Standard Trailer MTrailer Trailer 


  • M = Mandatory field. This field is required for this message type.
  • O = Optional field. Optional fields not specified in this ASX FIX Specification will be ignored if sent. However, optional fields specified in this ASX FIX Specification will be validated.
  • C = Conditional field. This field is dependent on the field / data type.

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