Type: String
Assigned value used to identify firm originating message if the message was delivered by a third party i.e. the third party firm identifier would be delivered in the SenderCompID (49) field and the firm originating the message in this field.
Added in protocol FIX.4.0
See in: FIX.4.0, FIX.4.1, FIX.4.2, FIX.4.3, FIX.5.0, FIX.5.0SP1, FIX.5.0SP2, FIX.5.0SP2 EP240, FIXT.1.1.