At times, you'll find the difference between the number of items in System Formats and Amazon Formats due to the reason that not all items would be Amazon-compatible.
Amazon is a marketplace that has it's own rules for listing of products. For example: Some of the criteria Amazon requires for product images are:
* Full white background for the main product images
* 85% of the product image frame should be filled with the product's photo
* Image should be minimum 1000 pixel on either of the dimension to get the zoom feature enabled
* Image should not contain any product that is not being sold. For example if you are selling Dupatta, the image should show only that, you should not show the Salwar Material.
These are just some of the criteria, there are also various other criteria and Amazon like marketplaces will be keep updating these standards.
As a result, not all the products would satisfy these criteria and so you'd find ourselves reject those products before making it to Amazon.
What we do is with such products is that we'll be keep working on these images and make maximum ones Amazon-compatible and send you the sheets. Other products which are not Amazon-compatible will be auto-rejected by our quality team to ensure that your Amazon account stands healthy and not affected because of uploading of non-compatible products.