SecurityListRequest (MsgType = x, FIXML = SecListReq)

The Security List Request (x) message is used to return a list of securities from the counterparty that match criteria provided on the request

Subscription for security status can be optionally specified by including the SubscriptionRequestType[263] field on the message.

SecurityListRequestType (559) specifies the criteria of the request:

0: Symbol (55)
1: SecurityType (167) and/or CFICode (461)
2: Product (460)
3: TradingSessionID (336)
4: All Securities

Tag	Field Name	FIXML	Req'd	Comments
<Standard Message Header>			Y	MsgType = x
320	SecurityReqID	@ReqID	Y	Subscribe or unsubscribe for security status to security specified in request.
559	SecurityListRequestType	@ListReqTyp	Y	Type of Security List Request being made
1465	SecurityListID	@ListID	N	Identifies a specific list
1470	SecurityListType	@ListTyp	N	Identifies a list type.
1471	SecurityListTypeSource	@LstTypSrc	N	Identifies the source a list type
1301	MarketID	@MktID	N	Identifies the market which lists and trades the instrument.
1300	MarketSegmentID	@MktSegID	N	Identifies the segment of the market to which the specify trading rules and listing rules apply. The segment may indicate the venue, whether retail or wholesale, or even segregation by nationality.
<Instrument>			N
<InstrumentExtension>			N
<FinancingDetails>			N
<UndInstrmtGrp>			N	Number of underlyings
<InstrmtLegGrp>			N	Number of legs that make up the Security
<RelatedInstrumentGrp>			N	The offer FX Swap points for an FX Swap. It is the "far offer forward points - near bid forward points". Value can be negative. Expressed in decimal form. For example, 61.99 points is expressed and sent as 0.006199
15	Currency	@Ccy	N	Identifies currency used for price or quantity fields, depending on the asset class being traded. CurrencyCodeSource(2897) may be used to disambiguate the code source scheme used, and ISO 4217 is the default scheme if absent. Absence of this field is interpreted as the default currency for the security as defined by the respective reference data. It is recommended that systems provide the currency value whenever possible. For securities trading and digital assets traded securities-style, identifies the currency used to denote the price. Absence of this field is interpreted as the default for the security. For Foreign Exchange (FX) and digital assets traded FX-style, identifies the dealt currency used to denominate the quantity related field(s).
2897	CurrencyCodeSource	@CcySrc	N	Identifies class or source of the Currency(15) value.
58	Text	@Txt	N	Comment, instructions, or other identifying information.
354	EncodedTextLen	@EncTxtLen	C	Must be set if EncodedText field is specified and must immediately precede it.
355	EncodedText	@EncTxt	C	Encoded (non-ASCII characters) representation of the Text field in the encoded format specified via the MessageEncoding field.
336	TradingSessionID	@SesID	N	Optional Trading Session Identifier to specify a particular trading session for which you want to obtain a list of securities that are tradeable.
625	TradingSessionSubID	@SesSub	N	Optional market assigned sub identifier for a trading phase within a trading session. Usage is determined by market or counterparties. Used by US based futures markets to identify exchange specific execution time bracket codes as required by US market regulations. Bilaterally agreed values of data type "String" that start with a character can be used for backward compatibility
263	SubscriptionRequestType	@SubReqTyp	N	Subscribe or unsubscribe for security status to security specified in request.
<Standard Message Trailer>			Y