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