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