Modify Order

Table 1. Modify Order Input Bitfields
Byte	Bit	Field
1	1	ClearingFirm	O
	2	(Reserved)
	4	OrderQty	R
	8	Price	R
	16	OrdType	O
	32	CancelOrigOnReject	O
	64	ExecInst	O
	128	Side	O
2	1	MaxFloor	O
	2	StopPx	O
	4	RoutingFirmID
	8	ManualOrderIndicator
	16	OperatorId
	32	FrequentTraderID
	64	(Reserved)
	128	LocateBroker	O

The OrderQty and Price fields in the optional field block must be present on all Modify Order message requests. Messages sent without both fields will be rejected. Price is optional for market orders.

ClearingFirm is required for service bureau ports.

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Modify Order