Error 80309 Fixed Currency account uses another currency
When:
During GL Voucher Posting
Reason:
When a GL Voucher Transaction that the account booked to the currency other than the denominated currency (if defined). This error will occurs
e.g.
Solution:
Amend the Currency Code in the Voucher Line or remove the Currency Code from the Chart of Account.
Reason:
When a Currency Code is defined in Chart of Account, it is treated as denominated currency account and only that currency can book to that account.