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