Hi Fernando!

Welcome and thank you for posting your question. I'm happy to share the best way to enter your refund.

On the vendor-company side, you can create a refund transaction to record the returned transactions. Be sure to select the items and enter the returned quantity to update their inventory count.

On the customer-company side, you can record a vendor refund.

Let me know if you need more help with your transactions. I'm just a comment away.