Shipedge now allows to store multiple barcodes (e.g. UPC, ISBN, etc) for the same product. Simply enter the UPC codes separated by commas (no-spaces) in the UPC field of the Product SKU. For example, you can enter: 123123,43242,23543.
The Shipedge apps will be able to scan any of those barcodes and recognized the product. This is specially useful for FBA returns, same products manufactured for different customers or markets and much more. It was a small change in Shipedge that brings a lot of functionality to our customers.