title: Handling FIX Reject: retrieve FIX message by sequence number in RefSeqNum using QuickFix/J
body: <p>I am trying to handle a FIX Reject (<code>MsgType 35=3</code>), but I am unclear on how to retrieve the message that is referred to by the FIX Reject message. </p>
  
  <p>The FIX Reject refers to the rejected message by <code>MsgSeqNum</code>, in the <code>RefSeqNum</code> field (tag 45). However I don't know how to get the rejected message by its sequence number. I think it should be possible because the FIX engine can resend messages in a sequence number range (in response to a resend request), so if the engine can do it so should I.</p>
  
  <p>The question: how do I get the message that is referenced by the reject message in the <code>RefSeqNum</code> field? </p>