# go to {nav Configuration > E-commerce > General}
# set "Choose the exchange rate source" to "Federal Reserve Bank of New York - www.ny.frb.org"
# press "Save" button
# go to {nav Configuration > E-commerce > Currencies}
# press "Update Rates" button
# confirm that no errors reported in the debugger panel
# go to {nav Configuration > E-commerce > General}
# set "Choose the exchange rate source" to "European Central Bank - www.ecb.int"
# press "Save" button
# go to {nav Configuration > E-commerce > Currencies}
# press "Update Rates" button
# confirm that no errors reported in the debugger panel
# confirm that active currency rates are updated
# set "Choose the exchange rate source" to "Bank of Latvia - www.bank.lv"
# press "Save" button
# go to {nav Configuration > E-commerce > Currencies}
# press "Update Rates" button
# confirm that no errors reported in the debugger panel