Help / Manage Inventory / Create and manage inventory / Error Code Explanations / 8000 Series Error Codes / Error 8028
Unauthorized product line. For more details, see http://sellercentral.amazon.ca/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.