Hi Jwhits,

Thanks for posting in the Community! If a refund is not recorded yet on the duplicate payment made to the supplier, you can follow these steps.

1. Select + New.
2. Select Supplier Credit.
3. In the Supplier field, select the appropriate supplier name.
   • Enter the Date.
   • Amount.
   • Account: the account used here is typically the original expense account on the original bill.
4. Select Save and close.

After that, make a bank deposit to enter the supplier refund.

1. Select + New.
2. Select Bank Deposit.
3. In the Add funds to this deposit section, fill in the following fields:
   • Received from: Select or enter the Supplier name.
   • Account: Select the Creditors (Accounts Payable) account.
   • Amount: Enter the Supplier refund amount.
4. Select Save and close.

Once you create a bill payment, you'll be able to apply the deposit you've created.

For more detailed information, you can check on this article: Handle supplier credits and refunds in QuickBooks Online.

Feel free to drop a comment below if you need further assistance. Have a great day!