HTTP/1.1 400 Bad Request I tried sending the following requests: {"Request":{"IdentifierList":"{\"@odata.type\":\"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList\",\"InstrumentIdentifiers\":[{\"Identifier\":\"XS062249170\",\"identifierType\":\"ISIN\"}],\"Range\":\"{\\\"Start\\\":\\\"2017-05-08T00:00:00.000Z\\\",\\\"End\\\":\\\"2017-05-11T00:00:00.000Z\\\"}\"}"}} {"ExtractionRequest":{"@odata.type":"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.CorporateActionsStandardExtractionRequest","ContentFieldNames":["Corporate Actions Type","Currency Code","Fitch Issuer ID","Instrument ID","Instrument ID Type","ISIN","Issue Level Event ID","MIC","Moodys Issuer ID","OPOL","PILC","RIC","S&P Issuer ID","Security Description","Security Long Description","SEDOL","Shares Amount","Shares Amount Date","Shares Amount In Thousands","Shares Amount Type","Shares Amount Type Default Flag","Shares Amount Type Description"],"IdentifierList":{"@odata.type":"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList","InstrumentIdentifiers":[{"Identifier":"6758.T","identifierType":"RIC"}],"ValidationOptions":null,"UseUserPreferencesForValidationOptions":false},"Condition":{"ReportDateRangeType":"Range","QueryStartDate":"2017-05-10T16:54:22.827+08:00","QueryEndDate":"2017-05-12T16:54:22.827+08:00","IncludeInstrumentsWithNoEvents":true,"IncludeNullDates":false,"ExcludeDeletedEvents":true,"IncludeCapitalChangeEvents":true,"IncludeDividendEvents":true,"IncludeEarningsEvents":true,"IncludeMergersAndAcquisitionsEvents":true,"IncludeNominalValueEvents":true,"IncludePublicEquityOfferingsEvents":true,"IncludeSharesOutstandingEvents":true,"IncludeVotingRightsEvents":true,"CorporateActionsDividendsType":"DividendPayDate","CorporateActionsEarningsType":"PeriodEndDate","CorporateActionsStandardEventsType":"SHO","ShareAmountChoice":"All","ShareAmountTypes":[]}}} {"ExtractionRequest":{"@odata.type":"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.TickHistoryTimeAndSalesExtractionRequest","ContentFieldNames":["Trade - Price","Trade - Volume","Trade - Exchange Time"],"IdentifierList":{"@odata.type":"#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList","InstrumentIdentifiers":[{"Identifier":"6758.T","identifierType":"RIC"}],"ValidationOptions":null,"UseUserPreferencesForValidationOptions":false},"Condition":{"MessageTimeStampIn":"GmtUtc","ApplyCorrectionsAndCancellations":true,"ReportDateRangeType":"Range","QueryStartDate":"2017-05-10T16:55:13.288+08:00","QueryEndDate":"2017-05-12T16:55:13.288+08:00","DisplaySourceRIC":true}}} This is the response that I am getting: HttpResponseProxy{HTTP/1.1 400 Bad Request [Set-Cookie: DSSAPI-COOKIE=R2154578860; path=/, Cache-Control: no-cache, Pragma: no-cache, Content-Type: application/json; charset=utf-8, Expires: -1, Server: Microsoft-IIS/7.5, X-Request-Execution-Correlation-Id: 6049c655-da4b-4234-8a9c-0a7dbd605008, X-App-Id: Custom.RestApi, X-App-Version: 11.0.487.64, Date: Fri, 12 May 2017 08:56:15 GMT, Content-Length: 208] ResponseEntityProxy{[Content-Type: application/json; charset=utf-8,Content-Length: 208,Chunked: false]}}