dss datascope-select dss-rest-api rest-api rics tick-history-rest-api pricing api python historical extraction forex c# java .net data authentication chain-ric time-series corporate-actions error bonds isin search json dss-gui symbology FTP http soap-api dss-soap-api terms-and-conditions funds api-limits entity sftp on-demand-extraction time-out index credit-ratings report-template embargo fields migration status token certificate futures quote connection derivatives equities postman eikon permid-api sdk template usage performance lipper rfa datastream-api venue-by-day log-in json-payload response error-429 expired-contract excel exchanges market-depth elektron-sdk bulk-download request error-400 yield ric corporate-events ssl eikon-data-api time-zone eonia expiration date etf asynchronous delayed-feed qualifier error-500 permissioning legacy sedol azure condition-codes tick-data price-history exchange-codes commodities time-stamp proxy volume quickstart-guide web model-view-controller splunk licensing static-data starmine direct-feed stream tls gui csv filter delphi pe-code error-handling environment upgrading world-check rdp-api example documentation sql trbc trth-rest-api vba request-token orhpaned-instrument repo timeseries connection-error web-services spread url calendar pending-job maturity fix-protocol jar metadata error-404 nuget error-408 polling error-message market-price multi-threading rdms refinitiv-realtime reports visual-studio events settlement deserialize mnemonics forwards linux error-502 credentials configuration time euribor matlab api-token oauth node-js exchange-holidays hardware issue trade handshake synchronous exception netes support pricing-history page