Hi @jjs1234,

Thank you for reaching out to us here in the Community. I'm here to help you enter the partial refund from the supplier in QuickBooks Online.

How you enter the refund will depend on the recorded travel expense. For an expense tracked using a bill, you can enter a vendor credit and apply it to the pending transaction.

Here's how:

1. Click the + New option.
2. Select Vendor credit or Receive vendor credit. 
3. In the Vendor dropdown, select your vendor.
4. Depending on how you record purchases with this vendor, enter the Category details or Item details. Usually, this is the category, product, or service you’re getting a credit for.
5. Select Save and close.

Once done, you can apply a vendor credit to the open bill. You can follow the steps in this article (scroll down to Apply vendor credits to a bill): Handle vendor credits and refunds in QuickBooks Online.

You can also seek expert advice from an accountant to help you with the reconciliation. They can suggest how to handle the partial refund and ensure you can reconcile successfully.

For additional reference, I've attached a link you can use to resolve any discrepancy in your reconciliation: Enter an adjusting entry for a reconciliation in QuickBooks Online.

Leave a comment below if you need more assistance entering the supplier refund. The Community and I will be around to lend a hand.