Tag 817
AltMDSourceID
Abbreviation:
AltMDSrcIDDescription
Session layer source for market data
(For the standard FIX session layer, this would be the TargetCompID (56) where market data can be obtained).
Wire Format & Usage Example
Single field (key=value)
817=EXAMPLE
In a FIX message (MarketDataRequestReject)
8=FIX.4.4 | 9=... | 35=Y | 49=SENDER | 56=TARGET | 34=1 | 52=20240101-09:30:00.000 | … | 817=EXAMPLE | … | 10=...
Fields are delimited by SOH (ASCII 0x01), shown here as " | ". The highlighted field 817=EXAMPLE is this field's position in the message.