CancelOrderUSFuturesV1


Field Name	Offset	Length	Data Type	Description
StartOfMessage	0	2	Binary	`B0 E3` (58288)
MessageLength	2	2	Binary	`35 00` (53)
MessageType	4	2	Binary	`EB 03` (1003)
MatchingUnit	6	1	Binary	Must be zero or correct unit
Reserved	7	1	Binary	Must be zero
SequenceNumber	8	4	Binary	The sequence number for this message
OrigClOrdId	12	20	Text	The OrigClOrdId on a cancel should be the ClOrdId sent on the most recent modify (or new order if no modifies have been sent), even if the corresponding response has not yet been seen.
ClearingFirm	32	4	Alpha	EFID that will clear the trade. Port attribute value of 'Default EFID' is used if not provided. Sent to OCC in Exec Broker field.
ManualOrderIndicator	36	1	Text	Y = Manual order entry N = Automated order entry
OEOID	37	18	Text	Identifies the Order Entry Operator responsible for this message. Min length 3, max length 18. Values in ASCII range 33-126 except comma, semicolon, and pipe are permissible.