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