> ## Documentation Index > Fetch the complete documentation index at: https://docs.deribit.com/llms.txt > Use this file to discover all available pages before exploring further. # Changes Log ### Release 17.02.2026 * `Execution Reports` (`8`): added nonmandatory tag `CashOrderQty` (`152`) to differentiate value based orders from quantity based orders. For value based orders (BTC & ETH inverse futures and perpetuals where the order size is specified as a USD amount), both `OrderQty`(`38`) and `CashOrderQty`(`152`) are present and equal. For quantity based orders, `CashOrderQty` is absent ### Release 07.10.2025 * Removed deprecated RFQ messages as previously announced. * Removed Quote Request (R) * Removed Quote Request Reject (AG) * Removed Quote Status Report (AI) * Removed RFQ Request (AH) ### Release 10.06.2025 * `MaxShow(210)` is replaced with `DisplayQty(1138)`. The iceberg orders cannot be fully invisible anymore. Setting the `DisplayQty (1138)` = 0 is interpreted as no hidden volume, i.e. the full order quantity is displayed to the market. Omitting the field gives the same result. * `Execution Reports` (`8`): added nonmandatory tag `RefreshQty` (`1088`) ### Release 06.03.2025 * Support for non-printable ASCII characters (such as control characters ranging from 0x00 to 0x1F) in string values has been removed to ensure compliance with the WS/REST API. Attempting to use non-printable ASCII characters will now result in a decoding error. ### Release 04.02.2025 * `Order Cancel/Replace Request` (`G`): removed support of undocumented tag `MaxShow` (`210`) in compliance with WS/REST API ### Release 08.08.24 * `Order Mass Cancel Request` (`q`): added `FreezeQuotes` (`9031`) tag ### Release 03.07.24 * `Mass Quote Acknowledgement` (`b`): added more values of `QuoteEntryStatus` (`1167`) * `MMProtection Limits` (`MM`): added `ProtectionVegaLimit` (`20118`) ### Release 04.06.24 * `New Order Single` (`D`): added nonmandatory tag `ValidUntilTime` (`62`) * `Order Cancel/Replace Request` (`G`): added nonmandatory tag `ValidUntilTime` (`62`) * `Mass Quote` (`i`): added nonmandatory tag `ValidUntilTime` (`62`) * `Execution Reports` (`8`): added nonmandatory tags `IsLiquidation` (`9034`), `IsRebalance` (`9035`), `IsRiskReducing` (`9036`) * `SecurityListRequest` (`x`): added `Currency`, `SecurityType`, `SecondaryCurrency` ### Release 09.03.24 * `SecurityStatusRequest` (`e`): added subscription * `SecurityStatus` (`f`): added Text field * Changed scope for `MMProtection Limits` (`MM`) from `account` to `trade` ### Release 13.02.24 * Added `Mass Quote` (`i`) * Added `Mass Quote Acknowledgement` (`b`) * `Execution Reports` (`8`): added nonmandatory tags `MMPGroup` (`9019`), `QuoteSetID` (`302`), `QuoteID` (`117`), `QuoteEntryID` (`299`) related to Mass Quoting * Added `Quote Cancel` (`Z`) * `Mass Cancel Report` (`r`): added one more type for `MassCancelRequestType`, added optional field `QuoteCancelType` for mass cancel reports generated by `Quote Cancel` (`Z`), `ClOrdID` is not required tag anymore * `MMProtection Reset` (`MZ`), `MMProtection Limits` (`MM`) -- added optional `MMPGroup`. ### Release 12.12.23 * Fixed an issue where `Reject` (`3`) was incorrectly returned instead of `OrderCancelReject` (`9`), with the specified `ClOrdID`, `DeribitLabel`, or `OrigClOrdId`, in response to an `Order Cancel Request` (`F`). ### Release 1.3.21 * `User Request`(`BE`): added `CROSS` as currency ### Release 1.3.20 * DeribitLiquidation is hidden from the public for the first hour after the trade (to prevent abusing). ### Release 1.3.19 * changed `MMProtectionLimits` and `MMProtectionReset` to work with currency pair instead of a single currency. ### Release 1.3.18 * added the following messages: TradeCaptureReportRequest (AD), TradeCaptureReportRequestAck (AQ), and TradeCaptureReport (AE). Clients can now utilize these to subscribe for receiving reports on their own trades. ### Release 1.3.17 * added fields NoTickRules(1205), StartTickPriceRange(1206), TickIncrement(1208) to the instrument for tick size steps * added option DisplayIncrementSteps(9018) to `Logon` and `Security List Request`(`x`) so the client can enable receiving the above mentioned new fields in the instrument ### Release 1.3.16 * added possibility to search closed orders by ClOrdID or DeribitLabel via OrderMassStatusRequest ### Release 1.3.16 * incremental refresh for indices now has 1 entry instead of 2 * BTC-DVOL, ETH-DVOL are renamed in compliance with other indices: BTCDVOL\_USDC-DERIBIT-INDEX, ETHDVOL\_USDC-DERIBIT-INDEX ### Release 1.3.15 * SecurityList (y): added new value FXSPOT of SecurityType for currency exchange spot market. * SecurityList (y): added PriceQuoteCurrency (1524) ### Release 1.3.14 * Documentation alignment ### Release 1.3.13 Added combo API: * added Security Definition Request (c) * added Security Definition (d) Added RFQ API: * added Quote Request (R) * added Quote Request Reject (AG) * added Quote Status Report (AI) * added RFQ Request (AH) ### Release 1.3.12 * MarketData Request (V) added DeribitShowBlockTradeId (9012) * MarketData (W) and (X): added TrdMatchID(880) as blocktrade ID ### Release 1.3.11 * MarketData Request (V): added DeribitSkipBlockTrades (9011) ### Release 1.3.10 * added possibility to use client's ClOrdID and DeribitLabel in Order Cancel Request(F), Order Mass Cancel Request(q) and Order Cancel/Replace Request(G) without exchange generated OrigClOrdID (equivalent of REST/WS cancel\_by\_label etc) ### Release 1.3.09 * Added Sequence Reset(4) * Security List Request(x) added SubscriptionRequestType(263) - possibilty to get notifications about new or terminated instruments * SecurityList (y): added SecurityStatus(965) in the notifications ### Release 1.3.08 * Logon(A): Added custom tag ConnectionOnlyExecutionReports(9010) ### Release 1.3.07 * Order Cancel/Replace Request (G): adjusted behavior for MMP orders when DeribitMMProtection (9008) flag is not specified ### Release 1.3.06 * SecurityList (y): added Deribit Volatility Index instruments: BTC-VIX, ETH-VIX * MarketData Request (V): added requests for Deribit Volatility Index ### Release 1.3.05 * Added MMProtection Limits (MM) * Added MMProtection Limits Result/Reject (MR) * Added MMProtection Reset (MZ) * New Order Single (D): added nonmandatory DeribitMMProtection (9008) * Order Cancel/Replace Request (G): added nonmandatory DeribitMMProtection (9008) * Execution Reports (8): added nonmandatory DeribitMMProtection (9008) ### Release 1.3.04 * Logon(A): Added custom tag DeribitSequential(9007) * Execution Reports (8): added SecondaryExecID which is ID of the last change of the order ### Release 1.3.03 * Added SecurityStatusRequest(e) request and SecurityStatus(f) response ### Release 1.3.02 * Execution Reports (8): added FillsGrp for non-immediate fills also (before it was only for immediate fills) * Position Report (AP): added missing PosType (703) added into PositionQty block * Execution Reports (8): added LastQty (32) and LastPx (31) ### Release 1.3.01 * MarketData Request (V): added support for multiple Symbols (NoRelatedSym and followed group of Symbols) * MarketData (W) and (X): added custom field DeribitLiquidation (100091) ### Release 1.3.00 * MarketData (W) and (X): added OpenInterest (746) * MarketData (W) and (X): added MarkPrice (100090) * MarketData (W) and (X): added UnderlyingSymbol(311) * MarketData (W) and (X): added UnderlyingPx(810) * MarketData (W) and (X): added ContractMultiplier(231) * Position Report (AP): added ContractMultiplier(231) * Position Report (AP): added UnderlyingEndPrice(883) * SecurityList (y): PutOrCall changed for compliance - put = 0, call = 1 * SecurityList (y): added InstrumentPricePrecision(2576) * SecurityList (y): added MinPriceIncrement(969) * SecurityList (y): added UnderlyingSymbol(311) * SecurityList (y): added MinTradeVol(562) * User Request(BE): added parameter Currency(15), default is BTC * Order Mass Cancel Request(q): added parameter Currency(15) * added notification for StopLimit and StopMarket Orders. StopMarket orders has OrdType=S * Execution Report (8): added ContractMultiplier(231) * Execution Report (8): added ConditionTriggerMethod(5127)