Please see bellow some reasons why this error shows up:
If you are a new eBay seller, you may need to manually add your first listing on your store. You have improper or prohibited eBay terms in your listing Your Seller Account does not have enough positive feedback Your Seller Account may require acceptance of new eBay terms You are trying to list an Auction with a quantity higher ‘1’ Use of email address and/or ‘@’ anywhere in your listing Incorrect ‘Category’ assignment Automatic Payment Method Missing or PayPal account on hold. Check each of the points above and retry the listing.