datastream-api dsws-api python datastream data eikon-data-api r eikon api time-series error derivatives datastream-for-office data-type rics equities historical forex connection excel token mnemonics api-limits esg .net index python api date vba authentication pandas constituents symbology screener eikon-com-api c# r-studio trade static-data codebook economic-data pricing eviews financial-statements request fields isin log-in sectors json issue news java connection-error corporate-actions proxy dss-rest-api bonds timeseries backtesting matlab vbscript indices tick-history-rest-api refinitiv-data-platform volatility credentials documentation rest-api research settlement key-error mac-os market-holidays exchanges setup workspace-data-api snapshot-pricing stata javascript jupyter-notebook eikon-for-office company beta chain-ric formula-builder refinitiv-dataplatform-eikon fundamentals symbol-list error-403 delivery batch bulk-download lipper linux exchange-holidays refinitiv-realtime soap-api sql azure error-handling time-out Download pe-code futures illogical-fid side-by-side-api point-in-time workspace refinitiv-data-platform-libraries screening fundamental-data thomson-reuters request-token excel-error permid-api funds filter forwards credit-ratings export ubuntu e-views ric volume