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In the case of pricing, the maker has the option to reject individual QuoteRequests or to initiate a stream of MFQuotes for each request. The request remains active and quoting may continue until either the maker sends CancelQuote or receives a MassQuoteAck indicating request expiration. If at any time a maker quote is rejected, the session will disconnect.
Trading requires an active QuoteRequest and streaming MFQuotes before the maker will receive NewOrder from a taker. The maker may choose to respond with RejectOrder or AcceptOrder, but if the response isn't timely, the venue will send OrderTimeout.
In the rare case AcceptOrder is rejected, the venue will send TradeCaptureAck. MarketFactory may also send this message if an acceptance didn't reach the exchange due to disconnection. Additional details on coding and venue-specific behaviour can be found in the Javadoc and venue matrix spreadsheet respectively.
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