Hi Frank / fabio
this is what i tried
If you change the item code in inventory to the same item code that amazon select then the matching error go away but when you do an item update
It still not show the qt on amazon to match the qt on ready pro on the ready pro screen for that item in amazon market place ( qt on amazon as the right qt and is listed with that number).
If you issue a different item code then link it to amazon then you will get the matching error.
I was able to link the part number on amazon with a different item code on ready pro before, it is working with no problem with the listing on ebay
You can link the ebay item to a different item code on ready pro and update work ok.