The item cannot be listed or modified. The title and/or description may contain improper words, or the listing or seller may be in violation of eBay policy.
There are several reasons this error may be shown. Here are a couple examples:
Your listing contains words that are in violation of eBay's listing Policy. ie. insurance, money order, checks, like new. eBay may have prohibited you from listing items and you may need to contact eBay's SafeHarbor Department. Please review your listing to make sure that you don't have any wording that is in violation of eBay's policy.
Addition information can be found on eBay's Selling practices policy help page.
On occasion, eBay requires that sellers go through the verification flow within the SYI form. This verification applies to all eBay sellers. List an item using eBay's Sell Your Item (SYI) form and go through the verification process. Once you've done this, you may use third party tools like Hyperspace to list products for that brand.