It is true that the same Product can be listed on Amazon under different ASIN(s)/ISBN(s). If you wish to list your Products this way, a few important conditions must be met.
To have the same Item created multiple times in M2E Pro Listing, you can apply a Duplicate action which you can access in the Actions drop-down menu at the top of the Listing grid after you switch it to the Settings View Mode.
It is important to bear in mind that a Product SKU is a key identifier which links your Product to Amazon Listing.
So, to have the same Product listed under different ASIN(s)/ISBN(s) on Amazon, you will need different SKUs assigned to it.
There are a few ways of how you could assign different SKUs to the same Product in M2E Pro. You may choose the one which you find the most convenient for yourself.
As both of these are automatic options, speed and efficiency are among their main advantages. In case of SKU modification, you are able to specify what the SKU value will look like. While, the generated SKU will be defined randomly and its content may look rather complicated.
To highlight the main steps of the process: all Product’s SKUs have to be unique (either modified, generated or taken from a Custom Attribute) and different ASIN(s)/ISBN(s) must be assigned to the Product.