AbleCommerce Shopping Cart Software

I noticed that there's no place in the admin product pages to store UPC numbers. UPC numbers are now required to sell at amazon. It would be nice if this field is made available, along with an amazon feed function.

Any reason why I can or can't use the Manufacturer's Part Number field instead? Will this cause problems later?

You have both Sku and Manufacturer Part Number available. If you don't need to use both for your business, there should be no problem using one of them for UPC.

Scott