Hi there, trang-tran.

You did great in performing a workaround in matching your bank payment with a check. You'll want to do a journal entry for this, I'd recommend consulting an Accountant. They are experts with the concepts of accounting. Also, they can help you further on how to create and manage your journal entry.

You can also refer to this article on creating a journal entry.

Let me know if you need more help by leaving a comment below.