Select Administration, then Manage, then Dimensions.
For Dimension, select Currencies.
For Currency, select the currency to delete.
Click Show Usage to determine if the currency is the default currency, a triangulation currency, or associated with an entity. You cannot delete a currency that meets these criteria.
If you delete a currency defined in the exchange rate table, it is deleted from the table.
Click Close, OK, Delete, and OK.
Update and validate business rules and reports.