ShortMessage: The item cannot be listed or modified.
LongMessage: 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.
As a new seller, we want to help you meet your buyers' expectations and sell successfully. For this reason, not all seller tools (e.g., Turbo Lister and File Exchange) are available to you yet since they're reserved for sellers with more experience.
After 90 days have passed from your first sale and you've received at least 10 selling Feedback points, you'll be able to use more advanced tools.
In the meantime, please use the Sell your item form or Easy Lister to list your items.
If you're new to selling on eBay and a private seller, to help you stay within your selling allowances, you won't be able to use bulk listing/editing tools until 90 days have passed after your first sale and you've received at least 10 positive Feedback ratings as a seller and you can take a look at this eBay guide as it goes into further detail about the listing and selling allowances for eBay sellers.