Tag 164

EmailThreadID

Abbreviation: EmailThreadID

TypeString

Tag164

AddedFIX.4.1

Used in1 messages

Unique identifier for an email thread (new and chain of replies)

Single field (key=value)

164=EXAMPLE

In a FIX message (Email)

8=FIX.4.4 | 9=... | 35=C | 49=SENDER | 56=TARGET | 34=1 | 52=20240101-09:30:00.000 | … | 164=EXAMPLE | … | 10=...

Fields are delimited by SOH (ASCII 0x01), shown here as " | ". The highlighted field 164=EXAMPLE is this field's position in the message.