Order Cancel Request Message Fields

Request to cancel an order.

Table 1. Order Cancel Request Message Fields
Tag	Field Name	Req’d	Description
35	Standard Message Header	Y	MsgType=‘F’
97	PossResend	N	‘N’ (default) indicates a new cancel. ‘Y’ Indicates an application level unsolicited resend. If ClOrdID has not yet been seen, the cancel is treated as normal. If ClOrdID already exists, the resent cancel is ignored.
11	ClOrdID	Y	Day-unique cancel ID chosen by member. 20 characters or less. Characters in ASCII range 33-126 are allowed, except for comma, semicolon, and pipe. Duplicate order ClOrdIDs will be rejected (or ignored if PossResend=‘Y’).
41	OrigClOrdID	N	ClOrdID of the order to cancel. OrderID must be sent if ClOrdID is not.
37	OrderId	N	OrderID supplied by Cboe on the order acknowledgment. Optional but recommended for performance. ClOrdID must be sent if OrderID is not.
60	TransactTime	N	Time cancel initiated/released. Required by FIX 4.2 but not used by Cboe.
55	Symbol	N	Ignored
65	SymbolSfx	N	Ignored
54	Side	N	Ignored
38	OrderQty	N	Ignored
	Standard Message Trailer	Y