edp research api elektron api symbology elektron research websocket elektron data platform datafields subscription news refresh token ipa subscription esg dead subscription token_authentication api oauth2 elektron data plat token javascript mk_phase ert elektron sdk - java elektron_dd multiple rics c# trading status rfa authentication token company research reports ts1 eta api suse websocket api how to get only increments for volatility rfa8.0 qos schema file for edp research data futures 403 response monitoring subscription update message bonds currency retrieve data urlencode we see raw data pricing source reuters api password change convert equity option chains method historical data refinitiv csv search hedd parameters deletion ipdp elektron apis ert in cloud upa ETA ema badrequest n2_ubms request not getting through starmine eta consumer platform aws data quality beta ric electron data platform ssl certificates python clear create id #edpapi market data post raw fields pricing tutorial news eikon api java sdk python api eikon access fid 4268 elektrontimeseries websockets edp historical pricing data xmalib ric transformation cfs delete