Service Bureau Configuration

Service Bureaus require special configuration. OnBehalfOfCompId should be set for New Order, Cancel and Cancel/Replace messages sent to Cboe. Orders with an unknown OnBehalfOfCompId will be rejected. ClOrdId values are required to be unique only within a given OnBehalfOfCompId. Execution Report and Cancel Reject messages sent by Cboe will have the DeliverToCompId set. Orders must be cancelled or replaced using the same OnBehalfOfCompId as was sent on the Order.

Cboe Titanium U.S. Equities FIX Specification - Service Bureau Configuration | Cboe