Type: int
The last MsgSeqNum value received and processed. Can be specified on every message sent. Useful for detecting a backlog with a counterparty.
Added in protocol FIX.4.2
See in: FIX.4.2, FIX.4.4, FIX.5.0, FIX.5.0SP1, FIX.5.0SP2, FIX.5.0SP2 EP240, FIXT.1.1.