Help / Manage Inventory / Create and manage listings / Error Code Explanations / 8000 Series Error Codes / Error 8028
Unauthorized product line. For more details, see http://sellercentral-europe.amazon.com/gp/help/24361
You appear to be submitting product data for an unknown product line or a product line that does not currently allow the creation of new products and offers. Please resubmit your product data referencing a valid product line.