Error 5461 unable to add pictures

I keep attempting to add a product that I am partnering with a supplier and Amazon keeps stating that they cannot verify the pictures. The product is unbranded and I’m trying to sell it under a private brand that I registered through GS1. Any thoughts on how I can get past this listing issue?

Ensure that the images you’re trying to upload are of high quality, well-lit, and showcase the product clearly from different angles.

In order to be able to sell your product under a private label brand, the branding needs to be clearly visible on the product and packaging.

Be prepared to provide any necessary documentation, such as invoices or manufacturer agreements, to validate your partnership with the supplier and the authenticity of the product.