Tag 1131

RefCstmApplVerID

Abbreviation: RefCstmApplVerID

TypeString

Tag1131

AddedFIX.4.4

Used in3 messages

Specifies a custom extension to a message being applied at the session level.

Single field (key=value)

1131=EXAMPLE

In a FIX message (Reject)

8=FIX.4.4 | 9=... | 35=3 | 49=SENDER | 56=TARGET | 34=1 | 52=20240101-09:30:00.000 | … | 1131=EXAMPLE | … | 10=...

Fields are delimited by SOH (ASCII 0x01), shown here as " | ". The highlighted field 1131=EXAMPLE is this field's position in the message.