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