The Currency - Setup tab is used for defining the general ledger currency codes corresponding to currencies in your system.
Go to Financial - Export Data to General Ledger - Currency - Setup.
Click the currency to define.
A corresponding field will be displayed in the General Ledger Currency Code column.
In the General ledger currency code column, enter the general ledger currency code.
Click Save.
Locate the general ledger currency code you want to edit.
Click the currency name.
Edit the general ledger currency code.
Click Save.