Cosmetic fix

public virtual decimal ConvertCurrency(decimal amount, Currency sourceCurrencyCode, Currency targetCurrencyCode)

Remove the double checking  - sourceCurrencyCode.Id == targetCurrencyCode.Id

            if (sourceCurrencyCode.Id == targetCurrencyCode.Id)
                return result;

            if (result == decimal.Zero || sourceCurrencyCode.Id == targetCurrencyCode.Id)
                return result;

Remove the first condition

  if (sourceCurrencyCode.Id == targetCurrencyCode.Id)
                return result;

and leave the second line

            if (result == decimal.Zero || sourceCurrencyCode.Id == targetCurrencyCode.Id)
                return result;

Hi foxnetsoft. Thank you for help. I implemented necessary changes, please see this commit for more details.

foxnetsoft wrote: