Tag 553

Username

Abbreviation: Username

TypeString

Tag553

AddedFIX.4.3

Used in4 messages

Userid or username.

Single field (key=value)

553=EXAMPLE

In a FIX message (Logon)

8=FIX.4.4 | 9=... | 35=A | 49=SENDER | 56=TARGET | 34=1 | 52=20240101-09:30:00.000 | … | 553=EXAMPLE | … | 10=...

Fields are delimited by SOH (ASCII 0x01), shown here as " | ". The highlighted field 553=EXAMPLE is this field's position in the message.