Thanks for contributing to our forum. Based on the API error message you have received, it sounds like you must have selected to charge shipping based on a rate table in your listings but have not yet set up the necessary shipping rate table within your eBay account.
In order to be able to successfully post your listings with this option, you will first need to create the desired shipping rate table(s) within your eBay account as described on the following page of eBay's Help index:
On the other hand, you should also be able to post your items successfully if you uncheck the any shipping rate table options in your listings and stick with the basic Flat Rate or Calculated shipping options that are available.
If you are still unable to post your items after making one of these changes, please contact our Customer Support team directly from under the “Help” tab on our site and we will be happy to review your situation in further detail.