Yes, RedWing, I am telling you that Amazon told me that was the reason. I am not being ambiguous. Here is the full response with emphasis added in bold (by me):
Greetings from Amazon Seller Support,
This is Mia the associate from the Catalog & Feeds Team that has been assigned to your case, I hope you are doing well. I understand you are contacting in regards to the products you are trying to add. I can imagine the impact that this has in your business so I personally worked in your account.
Please accept my sincere apologies for the time taken to resolve your issue. I do understand that this issue has taken an unusual length of time without any resolution so far. This issue, if I may inform, is very important to us and we are working towards providing you a resolution, as soon as we can.
The team that is currently working on this case is requesting information, if you could please reply to this- e-mail with the following information, we will be able to proceed and provide a proper resolution to this case:
From the GS1 website, we can see that the licensee of the prefix is Natural Beauty Imports, Inc. Nbi
We need documentation that you are the owner of Natural Beauty Imports, Inc. Nbi, or an authorized person to use GTIN codes owned by Natural Beauty Imports, Inc. Nbi.
If you are the owner of Natural Beauty Imports, Inc. Nbi, please provide a copy of the certificate issued to you by GS1 showing your legal entity and associated GTIN prefix(s). If not the owner:
A copy of a letter from the manufacturer, or brand owner stating that the UPC you are using to list this product is valid and owned by them OR that you are allowed to use your own barcode to list the branded item.
Note: The email or letter must also include the point of contact with the brand owner or manufacturer, mentioning that Amazon can contact them to verify. This information can either be found in the footer of the email or indicated in the text
For Brand name: NINJA
We require a proof that shows the relation between UPC/EAN owner “Natural Beauty Imports, Inc. Nbi” and brand " NINJA".
I’m sorry for making you take an additional step regarding this issue, it’s just to ensure we provide you a clear resolution to avoid any discrepancy.
Also, I would like to inform you that as per policy, this case, once replied by us, will be open only for the next 3 business days and will then be assigned to auto closure. If by any chance that situation happens, you may contact us regarding this issue again using the following link:
We will be looking forward for your prompt response!
Thank you for selling with Amazon,
Amazon.com Seller Support