I have received the wrong products from my supplier. I now wish to return these products in exchange for credit applicable to my next purchase.
Since I have already received the products and paid, I have a paid purchase invoice.
What is the correct way or removing the inventory and adding credit to the supplier account? I saw links to a guide for doing something similar, but the URLs are broken.
Should I just change the original purchase invoice by removing the two products, resulting in a credit for the difference (since I have already paid them)? That seems to be the easiest way.