I'll be here to assist you in recording over payment made by your customer. We have two options to record the overpayment in QuickBooks. Either leave the overpayment as is and then apply it to the customer's upcoming invoice. Another way is to create a refund. I'll show you how to do it:
Option 1: Apply the credit to an invoice.
Apply the credit to an invoice you already created
Click + New.
Pick Receive payment.
Choose the customer, then the credit and the invoice.
Hit another pending invoice and enter the overpayment amount in its Payment column.