Can anyone tell me what an EAN/UPC code is?
I uploaded 13 books from Ninja lister. All with the same settings. 7 books uploaded correctly. 6 failed with the message "EAN/UPC code must be valid"
I have checked and re-checked but can't figure this out. Think it might be something to do with the mail P&P codes but all 13 books were set exactly the same.
Do you know the amount of time it takes me to upload from Ninja, it might be easier to just relist individually !!!