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