You can specify which currencies are valid for an account.
Tip: When an amount is posted in a valid source currency, the system creates Source, Functional, and Equivalent fiscal sets to store original and converted currency amounts. You can save disk space by reducing the number of valid source currencies for an account.
Select the Multicurrency option for the account. This option appears only for multicurrency companies.
Important! After you select the Multicurrency option and save the account record, you cannot change the selection.
To specify a valid currency for an account:
General Ledger > G/L Accounts > Accounts.