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