Greetings from Amazon Seller Support,
We appreciate your relationship with Amazon.com and we are thankful for being a valuable part of Amazon.
Please understand that we want our costumers to go through a delightful experience while shopping on Amazon and for that we have gated some categories so that we would avail only genuine products on Amazon for buyers. This is the reason why we require documents while approving a seller to sell in a particular category. For this we verify all these documents through our tools and once all the documents are verified we grant approval to the sellers for selling them on Amazon.com
We have reviewed your attachments and unfortunately we were not able to verify them through our tools, as they were not meeting to our minimum requirements. Due to proprietary information we are unable to disclose why your application is decline. You and we have something in common that we are under Amazon Policy.
We really wish that we could provide a concise requirement needed on the invoice to proceed with the application. Due to propriety reason that would be under Amazon and multiple components that make up the approval criteria, we are unable to point to an individual factor for a particular declination.
Please understand that it is certainly not our intention to make policies to provide specific features to specific seller, however we have a standard defined procedure following which our sellers can avail lot more additional features. Policies are made to provide best and authenticated products and services to our buyer which raises a positive mindset while buying from Amazon.com and ensure trust for our sellers which ultimately help them to grow their business.
If you have any doubt regarding approval process then please remember that we are here to help you 24 x 7 and we ( Seller Support Team ) are just an e-mail away from you. Please contact us on priority basis and allow us to assist you with the same by writing to us with the query. We will be more than happy to assist you.