NewOrderList/FIX.4.1

Message Content of NewOrderList (MsgType=E)

TagText	FieldName or ComponentName	Required	Description
	StandardHeader	x	MsgType = E
66	ListID	x	Must be unique, by customer, for the day
105	WaveNo
67	ListSeqNo	x
68	ListNoOrds	x
69	ListExecInst		Include only in ListSeqNo = 1 message
11	ClOrdID	x	Unique identifier of the order as assigned by institution.
109	ClientID		Used for third-party transactions
76	ExecBroker		Used for third-party transactions
1	Account
63	SettlmntTyp		Absence of this field is interpreted as Regular.
64	FutSettDate		Required when SettlmntTyp = 6 (Future) or SettlmntTyp = 8 (Sellers Option)
21	HandlInst	x
18	ExecInst		Can contain multiple instructions, space delimited.
110	MinQty
111	MaxFloor
100	ExDestination
81	ProcessCode
55	Symbol	x
65	SymbolSfx
48	SecurityID
22	IDSource
167	SecurityType		Must be specified if a Future or Option. If a Future: Symbol, SecurityType, and MaturityMonthYear are required. If an Option: Symbol, SecurityType, MaturityMonthYear, PutOrCall, and StrikePrice are required.
200	MaturityMonthYear		For Options or Futures to specify the month and year of maturity.
205	MaturityDay		For Options or Futures and can be used in conjunction with MaturityMonthYear to specify a particular maturity date.
201	PutOrCall		For Options.
202	StrikePrice		For Options.
206	OptAttribute		For Options.
207	SecurityExchange		Can be used to identify the security.
106	Issuer
107	SecurityDesc
140	PrevClosePx		Useful for verifying security identification
54	Side	x
114	LocateReqd		Required for short sell orders
38	OrderQty	x
40	OrdType	x
44	Price		Required for limit OrdTypes. For F/X orders, should be the "all-in" rate (spot rate adjusted for forward points). Can be used to specify a limit price for a pegged order, previously indicated, etc.
99	StopPx		Required for OrdType = "Stop" or OrdType = "Stop limit".
211	PegDifference
15	Currency
59	TimeInForce		Absence of this field indicates Day order
126	ExpireTime		Required in TimeInForce = GTD
12	Commission
13	CommType
47	Rule80A
121	ForexReq		Indicates that broker is requested to execute a Forex accommodation trade in conjunction with the security trade.
120	SettlCurrency		Required if ForexReq = Y.
58	Text
193	FutSettDate2		Can be used with OrdType = "Forex - Swap" to specify the "value date" for the future portion of a F/X swap.
192	OrderQty2		Can be used with OrdType = "Forex - Swap" to specify the order quantity for the future portion of a F/X swap.
77	OpenClose		For options
203	CoveredOrUncovered		For options
204	CustomerOrFirm		For options when delivering the order to execution system/exchange.
210	MaxShow
	StandardTrailer	x

Notes

Please post comments, clarifications, examples here. Click on the edit button on the right and away you go! 

Don't forget to refer to the FPL Discussion Groups to back up anything you write.
You will often find the authoritative statements on matters of FIX specification interpretation there.
Links from FIXwiki pages to relevant discussions on the FPL site are very valuable.

For example if you were writing a clarification on how to specify the "quantity" of an order in FIX, you might add the
following relevant link, http://www.fixprotocol.org/discuss/read/f5014573, to back up your points.