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Request a specific Security to be traded with the second party. The request security is defined as a multileg security made up of two or more instrument legs. Also it can be used to query a list of combo-instrument securities offered by a trading parties. (this method is FIX equivalent of private/create_combo, public/get_combo_ids and private/get_combo_details request for WS/HTTPS end-points depending on SecurityRequestType (321) tag value).

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Arguments

TagNameTypeRequiredComments
320SecurityReqIDStringYesRequest identifier
321SecurityRequestTypeintYesType of Security Definition Request(c).

Valid values:

  • 0 = Request Security details, specifications by SecurityId,
  • 1 = Request Security identity for the specifications provided, the combo-instrument will be created if necessary.
  • 3 = Request list of existing combo-instruments

15CurrencyStringYesRequired is SecurityRequestType = 3, examples: BTC, ETH
48SecurityIDStringNoRequired if SecurityRequestType = 0. Identifies combo instrument.
Group InstrmtLegGrp
555NoLegsintYesNumber of legs that make up the Security
=>600LegSymbolStringNoNon-combo instrument name
=>624LegSidecharNoValid values:
  • 1 = Buy,
  • 2 = Sell
=>623LegRatioQtyintNoPositive integer for the strategy

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Response

The server sends Security Definition (d) message as a response, or rejects the request