Troubleshooting: Problems Uploading Amazon Paperback Edition And Cover
If when uploading your file into Amazon KDP you receive a message saying that they can’t upload it because there is no barcode — have no fear! There is a box to check that says you are not including a barcode. Sometimes, people check this box by accident. Try again and you should be all set. You don’t need a barcode — Amazon will provide you one.
If you’re getting error messages when attempting to upload your cover, please note that an e-book cover doesn’t have a “back.” A paperback cover has a back. Make sure your designer provides you with separate paperback and ebook cover files, and be sure to ask them for whatever information they need — so that they know what size to make it according to your wishes (see “Formatting” for more information on this).