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