requestBody={ "ExtractionRequest": { "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.TickHistoryMarketDepthExtractionRequest", "ContentFieldNames": [], "IdentifierList": { "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList", "InstrumentIdentifiers": [{ "Identifier": "CLM8", "IdentifierType": "Ric" }], "ValidationOptions": { "AllowHistoricalInstruments": "true", }, "UseUserPreferencesForValidationOptions": "false", }, "Condition": { "View": "RawMarketByPrice", "MessageTimeStampIn": "GmtUtc", "ReportDateRangeType": "Range", "QueryStartDate": "2018-04-25T22:00:00.000Z", "QueryEndDate": "2018-04-26T21:59:59.999Z", "DisplaySourceRIC": "true" } } } The above returns Extraction finished at 2019-02-09 16:42:43 UTC, with servers: tm03n03, TRTH (145.146 secs) Historical Instrument <RIC,CLM8> expanded to 1 RIC: CLM8. Total instruments after instrument expansion = 1 and if I simply change the years to 2017 from 2018, I get the following: Extraction finished at 2019-02-09 16:45:19 UTC, with servers: x03q13 Historical Instrument <RIC,CLM8> expanded to 0 RICS. Report suppressed because there are no instruments What am I missing? Both are historical queries...