I want to know how to correct a partial payment receved from a customer.

Hi there,

You've come to the right place for help. It would be a pleasure to show you how to edit a partial payment received from a customer. 

Here are the steps you'll need to follow: 

1.     From QuickBooks Online, navigate to the Sales tab. Select the Customers section.
2.     Find the customer whose payment needs changed in the list, and click on their name.
3.     Click the payment you'll be changing to open it. Use the filter (funnel icon) if you need help locating it.
4.     On the Receive Payment screen, find the Invoice that was paid with this transaction and change the amount in the Payment field.
5.     Click Save and close. 

Try these steps out and let me know if you have questions. I'll be here in case you need further assistance. :)