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In ESP pricing, a quote is rendered indicative by publication of zero quantities against prices for a given rung and side.

In addition, publication of a message without any rungs will effectively result in the complete withdrawal of the previous published ladder. 

QuoteType

For Quotes, QuoteType lives in the body level, and refers to the overall Quote Tradeability. Where as MassQuotes, it lives in NoQuoteEntries and it refers to the specific QuoteEntry. 

For a single Leg product, where BidPx is populated, but OfferPx is not.

• Quote
  • The Body level, QuoteType.BidIsTradeable will be set to True. 
• MassQuotes
  • The NoQuoteSets[1].NoQuoteEntries[X].QuoteType.BidIsTradeable will be set to True.

For Swap, Where the Near Leg OfferPx is populated, and the Far Leg BidPx is populated.

• Quote
  • The Body level, QuoteType.BidIsTradeable will be set to True. 
• MassQuotes
  • The Near Leg NoQuoteSets[1].NoQuoteEntries[X].QuoteType.OfferIsTradeable will be set to True, and the Far leg NoQuoteSets[2].NoQuoteEntries[X].QuoteType.BidIsTradeable will be set to True.

For Blocks, we always set both BidIsTradeable and OfferIsTradeable to True or Both to False. 

• Quote
  • If the BLK is tradeable, both QuoteType.BidIsTradeable and QuoteType.OfferIsTradeable will be set to True, regardless of the overall side.
• MassQuote
  • If level(X), if is Tradeable, all NoQuoteSets[ALL].NoQuoteEntries[X].QuoteType.BidIsTradeable and NoQuoteSets[ALL].NoQuoteEntries[X].QuoteType.OfferIsTradeable will be set True.
  • If level(Y) is not Tradeable, all NoQuoteSets[ALL].NoQuoteEntries[Y].QuoteType.BidIsTradeable and NoQuoteSets[ALL].NoQuoteEntries[Y].QuoteType.OfferIsTradeable will be set False.

Maker Quote Management

In ESP, Makers publish MassQuotes.  Each message is a single quote, which should contain a full snapshot of your price ladder for that symbol & price bucket.

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1. Venue Accepts Maker Trade - this is essentially confirming the trade has been completed successfully
2. Venue Rejects Maker Trade -  this may happen for a variety of reasons - e.g. mandatory regulatory fields are incorrect.
3. Venue Accepts Maker Rejection -  this is essentially a simple acknowledgment that no trade has been completed.
4. Venue Rejects Maker Rejection - the Venue was unable to propery process therejection for some reason. This is an indication of a serious system error.

If It should be noted that there is a lot of variation in how this terminal message is used across the venues:

• Some venues will only send 1. E.g. Bloomberg
• Some Venues will only send 1. or 2. E.g. CboeFX.
• Some Venues will send all variants. E.g. Currenex RFS
• Some Venues may not use this message at all.

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Each individual Quote is good until replaced, withdrawn or ValidUntilTime expiry.  

Client as Taker

• Bilateral  - Request sent to a single Maker, receives Quote messages.
• Basket - Request sent to multiple Makers, receives MassQuote messages aggregating the individual Maker Quote messages. This model is Venue dependent - currently offered by t360_tex and fxspotstream only.

In this model each QuoteSet represents a different Leg/value date, and each QuoteEntry for a given QuoteSet contains the Leg quote details provided by an individual LP, identified by reference to the "ExecutionVenue" EntryPassthruKey.

QuoteEntries in MassQuote are sorted by best Bid/Offer.

• • SPT, FWD and NDF are sorted by BidPx/OfferPx.
  • SWP and NDS are sorted by Swap points.
  • BLK and NDB are sorted by SpotRate.

If two QuoteEntries have the same price, they will be ordered from Oldest to Newest.

Please also see Price Representation.

In both cases, standard RFS subscription rules apply - the subscription is terminated by a deal request or a pricing duration timeout.

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