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