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 c# bonds api-playground pricing streaming-prices derivatives subscription pricing-history credentials java oauth documentation .net 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 json-payload rdp search machine-id starmine screener market-by-order research api edp request rssl ADH volatility-surface repo tick-history-rest-api news-filter permissioning metadata economic-data elektron-data-dictionary elektron refinitiv-dataplatform-libraries workspace-data-api holiday usage post jupyter-notebook corporate-actions trade filter session c++ ts1 date parameters volume refinitiv-dataplatform-eikon decoder scopes sql estimates port-number error-message web html dss-rest-api gics rest-api market-holidays nda-raw proxy postman rrt qos zero-curve javascript level-2 DACS cloud market url error-500 error-login screening bitcoin example futures news-topic-code-list sfc trep ema-api mifid csv etf callback alerts monitoring datastream-api error-404 app-key rfa-api client-file-store update-message