rdp-api refinitiv-data-platform python elektron-sdk research ipa api esg refinitiv-data-platform-libraries symbology websockets token forex eikon-data-api authentication historical codebook fields search rics funds eikon news volatility data error refinitiv-realtime lipper bonds c# api-playground pricing streaming-prices subscription derivatives pricing-history credentials oauth java .net documentation excel aws error-403 workspace bulk-download rdp chain-ric price-history swaps isin refinitiv data platform snapshot-pricing rfa ssl certificate eikon-com-api packages equities beta json tutorial rdp ipa api Download rdp search json-payload starmine machine-id screener research api market-by-order edp rssl request ADH repo volatility-surface tick-history-rest-api metadata news-filter permissioning elektron-data-dictionary economic-data elektron workspace-data-api refinitiv-dataplatform-libraries usage holiday jupyter-notebook post corporate-actions filter trade session date ts1 c++ parameters volume refinitiv-dataplatform-eikon scopes decoder estimates sql port-number html web error-message market-holidays rest-api dss-rest-api gics postman proxy nda-raw rrt qos level-2 javascript zero-curve DACS market cloud error-login error-500 url screening bitcoin example news-topic-code-list futures sfc trep ema-api mifid etf csv alerts callback error-404 datastream-api monitoring app-key rfa-api client-file-store update-message