Currently there is no way to record a refund from a vendor in AP so that it shows up in the AP interface and properly integrates with treasury, bank recs, and 1099s. Or, that is, to achieve that you have to do a three step work-around involving non-posting transactions in AP and bank and 1099 adjustments, and even then you have to know what you're looking at in AP to understand the result. Vendor refunds are a common occurrence; it is quite inconvenient to have to do this complicated dance. There should be a single interface, similar to the Invoice interface, that creates a refund receipt in AP that achieves all of these standard results.