Hello there, Di50.

You can delete the payment through the Chart of Accounts tab. 

Here's how:

1. On the upper left, click the Lists tab, then choose Chart of Accounts.
2. Double click the undeposited fund accounts.
3. Double click the payment.
4. In the payment window, click the Delete button.
5. Choose Yes to confirm the action.

You can reach out to your accountant if there's a need to adjust the balance since the payment was entered in a prior year.

Let me know if you need more help.