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