Cancel closing (in financial processing interface Ctrl+F 12)-Cancel posting (in financial processing interface Ctrl+F 1 1)-
De-approve (enter the voucher management center, with de-approve operation)-then modify the voucher.
-After modifying the voucher, if the amount is modified, you must delete the voucher carried forward to the profit and loss, and then post it again to close the profit and loss. -Check it again. it doesn't matter
If you don't know anything, you can press F 1 to view the help.