During my professional career as FIX Protocol Specialist, I noticed that sequence no. (Tag 34) is one of the very important tag in FIX protocol and we never focus to validate the same from QA or development perspective. But from FIX Engine perspective MsgSeqNum is the most important tag.
Every FIX engine has two sequence number -
In Sequence number of Sender FIX Engine should be same as out sequence number of Reciever FIX engine and Out Sequence number of Sender FIX Engine should be same as in sequence number of Reciever FIX engine
Whenever any FIX engine send a message, it's sequence number get increases by 1.
Every FIX engine has two sequence number -
- In Seq
- Out Seq Number
In Sequence number of Sender FIX Engine should be same as out sequence number of Reciever FIX engine and Out Sequence number of Sender FIX Engine should be same as in sequence number of Reciever FIX engine
Whenever any FIX engine send a message, it's sequence number get increases by 1.
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