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