Si vas a agregar un producto nuevo a Amazon.com y no coincide con un listado de producto existente, debes tener un número internacional de artículo comercial (GTIN).

This statement is true. When listing a new product on Amazon.com that doesn't already have an existing product page, a Global Trade Item Number (GTIN) is generally required. GTINs, such as UPCs, EANs, or ISBNs, uniquely identify products globally. Amazon uses these numbers to ensure product authenticity, prevent duplicate listings, and maintain a structured catalog. Without a GTIN, Amazon cannot accurately identify and categorize your new product, making it difficult for customers to find and purchase. While some exceptions exist for private label brands enrolled in Amazon Brand Registry, the standard requirement for new, unlisted products is a valid GTIN.