OrderAcceptedCopy Anchor Link

OrderAccepted records the trading venue's acknowledgement that an order is received and valid (often a FIX NEW OrdStatus). The ExecutionEngine applies it to the order, updates the Cache, and publishes it on the MessageBus.

Typical transition: SUBMITTED -> ACCEPTED. Handler: on_order_accepted.

FieldsCopy Anchor Link

Beyond the common Python order event fields, OrderAccepted carries:

ExampleCopy Anchor Link

Reading the event in a strategy handler:

def on_order_accepted(self, event: OrderAccepted) -> None:
    self.log.info(
        f"Order {event.client_order_id} accepted as {event.venue_order_id}",
    )

Related guidesCopy Anchor Link

• Events - Event categories, dispatch, and the common order event fields.
• Orders - Order types and the state machine.