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