Hey SRC1,
Welcome to the UK community page for QuickBooks online.
You'll need to speak to an accountant about the correct way of doing this for your business. there are a couple of ways you can achieve this using Quickbooks Online.
Can i confirm, was this an over-purchase, so too much left the bank, and the refund is coming back in, I am confident that's what you're asking about, but i want to be sure.