Hello @Seller_xQOpPVV9vwhSE,

Michelle at Amazon here. I understand that you want to sell different customized products. You would need to create a case with Seller Support to advise them what type of products you are selling and how you are going to customize them. If they are items that you are making in advance, I would recommend that you create a new ASIN for each product, that way as you sell them, you will know when you are out of that name. If your items do not have a UPC on them, you can apply for a GTIN exemption so that you don't have to purchase a UPC for each ASIN. If the category you are listing in allows variations, you can see if there is a valid variation for your products where you can pull all of the similar products on the same page. You may find this post helpful.

You may also find this New Seller Group a helpful forums group you may want to join. It's new sellers sharing information as well as some tenured sellers to provide information as well.

If you have additional questions, please reach out to Seller Support and provide them with more information on the type of products you are trying to list.

Wishing you the best!

Michelle