Hi there, @kenb.
Thanks for visiting the Community. I'm able to walk you through the steps in creating a vendor credit in QuickBooks Desktop.
When you need to refund a vendor for a returned product or services, creating a debit memo (vendor credit) is an option. You can use this to make a payment to open purchases in QuickBooks.
Here’s how to create a vendor credit:
For more information, check out this article: Record a vendor refund in QuickBooks Desktop.
That should get you pointed in the right direction. Post again in the Community if you need additional assistance, I’m always here to help. Take care and have a good one!