Defining Foreign Currency Exchange Rates 
Use this procedure to define foreign currency exchange rates manually.
You have defined all the foreign currencies for which you need to define exchange rates ().
From the SAP Business One Main Menu, choose .
In the window header, select the relevant month and year. The default is the current date.
In the required intersecting date line/currency matrix cell, specify the exchange rate.
Note
The value of the exchange rate entered depends on the Exchange Rate Posting method selected on the General Settings: Display Tab.
After entering all necessary exchange rates, choose Update to save the data.