ISBN – Barcodes for Books

ISBN (International Standard Book Number) is the only valid barcode format for books. ISBNs are a set of numbers starting with 987 issued exclusively by the International ISBN agency. You must apply for and obtain your ISBNs from if you wish to include one on your Book. Please note you cannot use the EAN-13 … Read more

Error Code 8556

Error Code 8556: Sorry, this product is ineligible for Amazon Marketplace selling at this time If you are seeing this error message then Amazon has detected that the GTIN you are using is already listed on an existing item that is in a category that you have not been approved to sell in. Please check … Read more