Ref: https://vgcollect.com/item/104532
The reject was due to you trying to put the ISBN and/or UPC into the item number field. And as the edits came through, it showed that you tried to put 9780744016383 into both fields.
Style guide says put ISBN for for barcode, Advanced Style guide says put ISBN in description.
I do not think there is a mixup with the two style guides, if there is, outline it here specifically. If this is about how the original style guide uses two different header sizes making "Barcode / UPC / EAN codes" look to be a sub-section as item numbers, we can fix that.
Yes, I'm aware, I wasn't paying attention that both value were the same until after the fact. I entered ISBN-13 into Item number on purpose. Putting ISBN-13 into barcode wasn't explicitly intentional, the barcode lookup website had a barcode so I typed in the value and didn't notice until after I submitted that the barcode they provided was also the ISBN-13 value.
From style guide (Presumably regarding barcodes not item numbers)
"ISBN codes are normally used on books and other products. These can be 10 or 13 digits long. If an item does not have a UPC, then enter the ISBN code"
From advanced style guide
"ISBN is an additional number that can be found on books and some video games. This number can be put into Description and not put into Item Number or Barcode fields."
I am positing that this is not what we should be doing, as well as pointing out the inconsistency. I propose that If UPC doesn't exist, enter ISBN-13 into barcode. I also propose that for books/strategy guides that ISBN is a valid value for the Item number field. So in the case of a book that has UPC and ISBN, Item number = ISBN-13 and Barcode = UPC... in the case of a book with no UPC, Item number = ISBN-10 and barcode = ISBN-13.