Single currency system
You must use a single currency system if all the enterprise units of a company use a single currency to register, calculate and report amounts.
Defining the currencies
For a single currency-system company you must enter the reference currency. LN uses the reference currency as the local currency.
Single currency calculation
You must define the exchange rate of each external currency to the reference currency. LN converts all the external currency amounts to the reference currency and registers, calculates, and reports all the amounts in that currency.