Yes, you can sell on Amazon with our EAN or UPC codes, but there are important limitations to understand.
If the brand already exists on Amazon with its own codes, you must use the original codes for that brand.
Amazon may also ask for additional documents depending on the product category. This is normal. For this reason we provide certificate documents with your order. You can fill in the required information after purchase and include the certificate in your support case.
If you are creating variations of an existing product, all variations need to use codes with the same prefix. If your new EANs have a different prefix, Amazon will require you to create a new product instead of adding a variation.

Please note that you cannot use codes from another brand if that brand already has registered codes on Amazon. In that situation you must use the original codes linked to that brand. Even if you are the manufacturer, Amazon may require additional documents depending on the product, brand and category. This is exactly what our certificates are for.
When Amazon requests documentation, you can provide the GS1 style certificate included with every purchase. You can generate it after checkout by entering the required information.
To generate your certificate we need two fields from you:

1. Name of the person responsible
2. Name of the company OR brand OR seller that will use the codes (this must match exactly the brand or manufacturer name you entered on Amazon)

You can fill this in and download your certificate immediately after ordering. Amazon usually accepts these documents as long as the brand information matches.

If Amazon shows error 5665, your brand name usually needs approval. This is an internal Amazon process. The fastest solution is often to use a simpler brand name that has not been registered and does not require verification. Short names of three or four letters tend to work best.
If you prefer to keep your chosen brand name, you must complete Amazon's brand approval steps. This is outside our control and not linked to the codes.