Revision History

The table below provides a snap-shot of the updates in each revision of this document.

Version No. Date Summary of Update
v2026.1.0.3215 Feb 11, 2026

Added the following Custom Data Type:

Added new fields in SymbolFromAlternateSymbologyRequest and SymbolFromAlternateSymbologyResponse.

v2025.8.0.3104

Dec 24, 2025

Added the following API and Custom Data Type:

Added new fields in AggregatePositionRecord and DepositRow.

v2025.7.0.2848 Nov 14, 2025

Added the StreamMarketData and UnSubscribeStreamMarketData API.

Added new field in QuoteChainResponse.

v2025.6.1.2816

Nov 03, 2025 Added the following API and Custom Data Type:

Added new fields in Level1MarketDataRecordRequest and SubscribeOrderInfoRequest.

v2025.5.1.2717 Oct 16, 2025

Added new field in OrderDetailsResponse.

Added a note about EMS xAPI login limitations.

v2025.5.0.2421 Aug 13, 2025 Added the GetUserRoutes API.
v2025.4.0.8 Jun 25, 2025 There are no documentation updates in this EMS xAPI release.
v2025.3.0.6 May 14, 2025 Moved authentication APIs to a separate category and reorganized the sequence of API categories to enhance usability.
v2025.2.1.1912 Apr 22, 2025 There are no documentation updates in this EMS xAPI release.
v2025.2.0.1873 Apr 07, 2025 Renamed the GetOrderDetailByDateRangeJson to GetOrderDetailByDateRange API.
v2025.1.0.1822 Mar 07, 2025

Renamed the GetOrderDetailByOrderIdJson to GetOrderDetailByOrderId API.

Deleted GetTodaysActivityBook API.

Added new fields in SubscribeOrderInfoRequest.

v2024.7.1.1651 Nov 29, 2024 There are no documentation updates in this EMS xAPI release.
v2024.7.0.1636 Nov 12, 2024 Added the SubscribeTodaysNetPositions and UnSubscribeTodaysNetPositions API.
v2024.6.1.1634, v2024.6.0.1615 NA There are no documentation updates in these EMS xAPI releases.
v2024.5.0.1576 Aug 19, 2024 Re-arranged the order of Order, Utility, and MarketData APIs alphabetically.
v2024.4.0.1473 Jun 20, 2024

Added the SubscribeTickData and UnSubscribeTickData API.

Added new fields in SubmitSingleOrderRequest.

v2024.2.0.1355 Mar 20, 2024 There are no documentation updates in this EMS xAPI release.
v2024.1.0.1209 Feb 14, 2024

Added new fields in IntradayBarsRequest, SecurityData, and SubscribeOrderInfoResponse.

v2023.8.1.1167, v2023.8.0.1146, v2023.7.0.887 NA There are no documentation updates in these EMS xAPI releases.
v2023.6.0.723 Sep 27, 2023

Added new fields in OrderDetailsResponse.

v2023.5.0.947 Aug 18, 2023

Added new field in UnSubscribeLevel1DataResponse, AddSymbolsResponse, RemoveSymbolsResponse, UnSubscribeLevel2DataResponse, SubmitBookTradeResponse, SubmitSingleOrderResponse, ChangeSingleOrderResponse, CancelSingleOrderResponse, SubmitPairOrderResponse, ChangePairOrderResponse, CancelPairOrderResponse, SubmitSeedDataResponse, SubscribeOrderInfoResponse, BasketOrderResponse, SubmitAllocationOrderResponse, SubmitTradeReportResponse, ServerAcknowledgement, StartLoginSrpResponse, CompleteLoginSrpResponse, ConnectResponse, DisconnectResponse, and ChangePasswordSRPResponse.

v2023.4.0.809 Jul 12, 2023

Added new fields in OrderInfoFilters.

Deleted fields in DailyWeeklyMonthlyBarsRequest, IntradayBarsRequest, TickDataRequest, and OptionsAndGreekDataRequest.

Added Level1MarketDataRecordRequest object.

v2023.3.0.638 May 12, 2023 There are no documentation updates in this EMS xAPI release.
v2023.2.0.478 Apr 14, 2023 Added the following API and Custom Data Type:

Updated Level2MarketDataRequest to support more then one symbol.

Deleted Request and Advise fields from OptionChainRequest and SymbolReferenceDataRequest.

v2023.1.0.2 Feb 16, 2023

Added OrderDetailsResponse Custom Data Type.

Added new field in SubmitSingleOrderRequest, SubmitSingleOrderResponse, and TodaysActivityRequest.

Updated the key values in SubscribeOrderInfoResponse and OrderResponse.

v2022.8.0.4 Dec 21, 2022 Added new fields in SubscribeOrderInfoRequest, TodaysActivityRequest and TodaysActivityJsonRequest.
v2022.5.0.0 Sep 09, 2022 Added new fields in OrderResponse and Level1MarketDataResponse.
v2022.3.0.0 Jun 10, 2022 Added new fields in TodaysBrokenDownPositionsRequest. Added additional event types in Appendix A: Order Event Types.
v2022.2.3.0 Apr 07, 2022 Added the GetLevel1MarketData API and extended fields in SubscribeOrderInfoResponse.
v2022.2.2.0, v2022.2.1.0, v2022.2.0.0, v2021.9.0.0, v2021.8.1.0, v2021.7.0.0 NA There are no documentation updates in these EMS xAPI releases.
v2021.5.0.0 Jul 16, 2021

Added the following APIs and Custom Data Type:

Added Required? field information for the Order and Utility request APIs.

Updated API descriptions for the Order and Utility APIs.

Added, Modified, and Deleted Fields in OrderResponse, SubmitSingleOrderRequest, ChangeSingleOrderRequest, SubscribeOrderInfoResponse, OrderInfo, and OrderInfoFilters.

Added information related to Extended Fields in OrderResponse and SubscribeOrderInfoResponse.

Added new section Appendix A: Order Event Types.

v2021.2.0.0 Mar 31, 2021 Added the GetTodaysActivityJson API. Applied order filters to TodaysActivity APIs and added user defined timeout intervals for Utility APIs.
v2021.1.0.0 Feb 02, 2021 Added the following API and Custom Data Type:
v2020.9.0.0 Dec 18, 2020 Added the SubscribeHeartBeat API.
v2020.8.0.0 Nov 25, 2020 Added the following APIs and Custom Data Type:
v2020.7.3.0 Nov 10, 2020 Updated the stable version details of EMS xAPI.
v2020.7.2.0 Oct 30, 2020 Initial release.