Hi bob-hawes-gmail-,
It's a pleasure to see you in Community. Welcome! QuickBooks Online provides the ability to enter a supplier credit and apply it to any open or future bill. I would be happy to show you how!
Let's create a supplier credit;
1. Open +New from the left menu and select Supplier credit
2. Use the Supplier ▼ dropdown menu and choose the supplier name
3. Enter the Category details or Item details. This is the category, product, or service you’re getting a credit for
4. Hit Save and close.
Here's how to apply the credit to a bill;
1. Open +New and select Pay bills
2. Select a bill for your supplier from the list
Note; You'll see the available credit with this supplier in the Credit Applied field
3. Complete the remaining fields
4. Hit Save and close.
Please feel free to reach out at any time, when other questions come to mind. We would be glad to help!