datastream dsws datastream in python datastream web service r datastreamdsws2r eikon api datastream in excel python python dsws dsws.api pydsws connection python api eikon api rstudio datastream python dsws_login get_data token timeseries date isin currency error historical data datatypes datastream api data format date vba code to refresh an excel sheet request table retrieve data dates excel login mnemonic dfo esg datastream datatypes pydatastream index constituents eviews eikon data api datastream functions refinitiv esg scores adjusted-prices inst_phase rolling column headers data retrieval authenticate using c#.net and request data like spx index and us treasury bill rate data on company level get list dataframe id navigate lookup false time series data api refinitiv matlab feed static data implied volatility override #python excel vba closing prices fields price target msci issue rating eikon api for excel #errormessage data extraction limitation end date data fields python api activation lme china sql server no data worldscope get python login rest api ric data error forward fx price programmatically average price .net datastreamdsws ibes economic indicators permid java pts user created indices snapshot symbol lookup datastream vba thomson reuters esg scores cominterface data download api issue product.datastream.com release time-series datastream fx currency rates login and request time series delivery constituents dividend screener trading status price static-content access token datetime intraday quarterly token_authentication dsgrid connect name implied volatilities timeseries #dsws not in reference currency rhistory screening json recommendation eikon python api #python api option prices .net api requests multiple field limits historical #error corporate govern c# .net api year end dates list definitional notes settlement price inflation pyodbc private equity investment amounts options fundamental data requesttable login failed lipper credentials forward c# .net eikon excel install vba downloading fundamental data next mutual funds allowance datastream commodities error handling