Tag 17
ExecID
Abbreviation:
Description
Unique identifier of execution message as assigned by broker (will be 0 (zero) for ExecTransType=3 (Status)).
Uniqueness must be guaranteed within a single trading day or the life of a multi-day order. Firms which accept multi-day orders should consider embedding a date within the ExecID field to assure uniqueness across days.
(Prior to FIX 4.1 this field was of type int)
Wire Format & Usage Example
Single field (key=value)
17=EXEC-001
In a FIX message (ExecutionReport)
8=FIX.4.4 | 9=... | 35=8 | 49=SENDER | 56=TARGET | 34=1 | 52=20240101-09:30:00.000 | … | 17=EXEC-001 | … | 10=...
Fields are delimited by SOH (ASCII 0x01), shown here as " | ". The highlighted field 17=EXEC-001 is this field's position in the message.