About the Euro Triangulation Conversion

During a euro conversion interim period (when one or both of the currencies involved is a part-of-euro currency and neither currency is the euro), euro regulations prohibit direct currency conversions between participating countries. Therefore, to convert a monetary amount from one national currency to another, the system currency conversion process:

1. Converts the amount from the national currency to the euro.
2. Converts the resulting amount, which is expressed in euros, to the other national currency.

For example, to convert Deutsche marks to francs:

The same principle applies if your domestic currency is not part-of-euro, but you need to do business with a vendor or customer situated in a participating country who will be using the euro, but has not yet switched to it. The system conversion process

1. Converts the amount from your domestic currency to the euro.
2. Converts the resulting amounts, which are expressed in the euro currency, to the national currency of the vendor or customer.

For example, to convert US dollars to francs:

The exchange rate between each participating national currency and the euro is fixed. If the currency is part-of-euro, this fixed exchange rate to the euro is stored in the system  (on the Currency Codes form). There is only one exchange rate to the euro (1 euro =) for each part-of-euro currency there is no buy and sell rate.