Good Evening @Seller_hNnXXv7Qe5IeI, I wanted to reach out to you to see if you still required assistance with learning more about GTIN and listing new products on Amazon.?

For most categories, you are required to provide a unique product identifier, known as a GTIN (Global Trade Item Number), to create new listings.

The following are the most commonly used GTINs in the Amazon catalog:

• Universal Product Code (UPC)
• International Standard Book Number (ISBN)
• European Article Number (EAN)
• Japanese Article Number (JAN)

The specific GTIN required for product page creation and matching varies by category. The requirements of each category, including exceptions and exemptions where available, are summarized in the table on the Product ID (GTIN) requirements by category Help page.

I additionally wanted to share the Product detail pages and offers help page that discusses how new products are added to Amazon's catalog:

Add products to the Amazon catalog

If you can't find a product on Amazon, you can submit product information so Amazon can create a new product detail page. Detail pages are shared with other sellers who can offer the same product.

1. From the Inventory drop-down menu, select Add a Product.

2. Click on Create a new product listing within the List a new product section.

3. You can choose one of the following options to create a new product listing:

--> Search for your product’s category and select the Find category button.

-->Browse the All Product Categories option for the category that matches the product you want to sell and click the Select button. Choosing your category accurately can help buyers find products more easily.

4. Enter the required information, which will be highlighted in red across the tabs within the workflow.

Note: You can select the Advanced View option to enter additional information about your product.

5. Once you enter the required information in the tabs provided, you can click Save and finish.

Please let us know if we can further assist you or you may always contact Selling Partner Support with inquiries at anytime. Have a wonderful rest of the week. Sincerely, Cooper_Amazon