Security Definition Request (MsgType = c, FIXML = SecurityDefReq)

The Security Definition Request (c) message is used for the following:

Request a specific Security to be traded with the second party. The request security can be defined as a complex security made up of one or more underlying securities.
Request a list of the Security Types that can be traded with the second party.
Request a list of Securities that can be traded with the second party. This request can optionally be qualified with Symbol (55) , TradingSessionID (336) , SecurityExchange (207) , and Security Type (167) .

See Appendix I: "Security Definition, Security Status, and Trading Session Message Scenarios" of FIX Specification

Tag		Field Name	FIXML	Req'd	Comments
<Standard Message Header>				Y	MsgType = c
320		SecurityReqID	SecurityReqID	Y
321		SecurityRequestType	SecurityReqType	Y
55		Symbol	Symbol	N	Symbol of the requested Security
65		SymbolSfx	SymbolSfx	N	Suffix of the Requested Security
48		SecurityID	SecurityID	N	Security ID of the requested Security
22		IDSource	IDSource	N	Source of the Security ID
167		SecurityType	SecurityType	N	Must be specified if a Future or Option. If a Future: Symbol (55) , SecurityType (167) , and MaturityMonthYear (200) are required. If an Option: Symbol (55) , SecurityType (167) , MaturityMonthYear (200) , PutOrCall (201) , and StrikePrice (202) are required.
200		MaturityMonthYear	MonthYear	C	Specifiesthe month and year of maturity. Required if MaturityDay (205) is specified.
205		MaturityDay	Day	N	Can be used in conjunction with MaturityMonthYear (200) to specify a particular maturity date.
201		PutOrCall	PutCall	C	For Options.
202		StrikePrice	StrikePx	C	For Options.
206		OptAttribute	OptAttribute	N	For Options.
231		ContractMultiplier	ContractMultiplier	N	For Fixed Income, Convertible Bonds, Derivatives, etc. Note: If used, quantities should be expressed in the "nominal" (e.g. contracts vs. shares) amount.
223		CouponRate	CouponRate	N	For Fixed Income.
207		SecurityExchange	SecurityExch	N
106		Issuer	Issuer	N
348		EncodedIssuerLen	EncodedIssuerLen	C	Must be set if EncodedIssuer (349) field is specified and must immediately precede it.
349		EncodedIssuer	EncodedIssuer	C	Encoded (non-ASCII characters) representation of the Issuer (106) field in the encoded format specified via the MessageEncoding (347) field.
107		SecurityDesc	SecurityDesc	N
350		EncodedSecurityDescLen	EncodedSecDescLen	C	Must be set if EncodedSecurityDesc (351) field is specified and must immediately precede it.
351		EncodedSecurityDesc	EncodedSecDesc	C	Encoded (non-ASCII characters) representation of the SecurityDesc (107) field in the encoded format specified via the MessageEncoding (347) field.
15		Currency	Currency	N
58		Text	Text	N	Comment, instructions, or other identifying information.
354		EncodedTextLen	EncodedTextLen	C	Must be set if EncodedText (355) field is specified and must immediately precede it.
355		EncodedText	EncodedText	C	Encoded (non-ASCII characters) representation of the Text (58) field in the encoded format specified via the MessageEncoding (347) field.
336		TradingSessionID	TrdSesID	N	Optional Trading Session Identifier to specify a particular trading session for which you want to obtain a list of securities that are tradeable.
146		NoRelatedSym	NoRelatedSym	C	Number of legs that make up the Security
=>	311	UnderlyingSymbol	UndrSymbol	C	The UnderlyingSymbol (311) must be specified as the first field in the repeating group. Required if NoRelatedSym (146) > 0.
=>	312	UnderlyingSymbolSfx	UndrSymbolSfx	N
=>	309	UnderlyingSecurityID	UndrSecurityID	N
=>	305	UnderlyingIDSource	UndrIDSource	N
=>	310	UnderlyingSecurityType	UndrSecurityType	N	Must be specified if a Future or Option. If a Future: UnderlyingSymbol (311) , UnderlyingSecurityType (310) , and UnderlyingMaturityMonthYear (313) are required. If an Option: UnderlyingSymbol (311) , UnderlyingSecurityType (310) , UnderlyingMaturityMonthYear (313) , UnderlyingPutOrCall (315) , and UnderlyingStrikePrice (316) are required.
=>	313	UnderlyingMaturityMonthYear	UndrMonthYear	C	Specifies the month and year of maturity. Required if UnderlyingMaturityDay (314) is specified.
=>	314	UnderlyingMaturityDay	UndrDay	N	Can be used in conjunction with UnderlyingMaturityMonthYear (313) to specify a particular maturity date.
=>	315	UnderlyingPutOrCall	UndrPutCall	C	For Options.
=>	316	UnderlyingStrikePrice	UndrStrikePx	C	For Options.
=>	317	UnderlyingOptAttribute	UndrOptAttribute	N	For Options.
=>	436	UnderlyingContractMultiplier	UndrContractMultiplier	N	For Fixed Income, Convertible Bonds, Derivatives, etc.
=>	435	UnderlyingCouponRate	UndrCouponRate	N	For Fixed Income.
=>	308	UnderlyingSecurityExchange	UndrSecurityExch	N	Can be used to identify the security.
=>	306	UnderlyingIssuer	UndrIssuer	N
=>	362	EncodedUnderlyingIssuerLen	UndrEncodedIssuerLen	C	Must be set if EncodedUnderlyingIssuer (363) field is specified and must immediately precede it.
=>	363	EncodedUnderlyingIssuer	UndrEncodedIssuer	C	Encoded (non-ASCII characters) representation of the UnderlyingIssuer (306) field in the encoded format specified via the MessageEncoding (347) field.
=>	307	UnderlyingSecurityDesc	UndrSecurityDesc	N
=>	364	EncodedUnderlyingSecurityDescLen	UndrEncodedSecDescLen	C	Must be set if EncodedUnderlyingSecurityDesc (365) field is specified and must immediately precede it.
=>	365	EncodedUnderlyingSecurityDesc	UndrEncodedSecDesc	C	Encoded (non-ASCII characters) representation of the UnderlyingSecurityDesc (307) field in the encoded format specified via the MessageEncoding (347) field.
=>	319	RatioQty	RatioQty	N	Quantity of particular leg in the Security
=>	54	Side	Side	N	Indicates if this leg of the security is to be Bought or Sold as part of this complex security.
=>	318	UnderlyingCurrency	UndrCurrency	N
<Standard Message Trailer>				Y

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