Editing Exchange Rates Manually 
Use
You use this function to enter exchange rates in relation to time (
Valid from ).Integration
Prerequisites
Before you can enter exchange rates, you must make the following Customizing settings by choosing Implementation Guide for R/3 Customizing ® General Settings ® Currencies:
Define the rates types under which you want to store your exchange rates.
Define the currency keys you require.
Define the translation ratios for
See also:
The relevant section in the Implementation Guide (IMG) by choosing Implementation Guide for R/3 Customizing ® General Settings ® Currencies.
Features
Activities

If you have not defined any translation ratios for this combination (rate type, from and to), a message appears giving you the option of making these entries.

The Copy as function enables you to copy an existing entry so that you only have to enter the Valid from date and the new Rate.