EBay EBay Api Professional for script to choose for eBay Catalogue

I am looking for a EBay Api Professional for script to choose for eBay Catalogue, I have a complete eBay Listing Script, That uses all eBay Calls, and functions perfectly, the only Feature I have not been able to create is the ability to have a member choose from the eBay Catalogue, if applicable based on category selection, I am using get eBay Features and eBay specifics . But with certain categories I get the following error Warning [Errors] => SimpleXMLElement Object ( [ShortMessage] => Add product details to this listing. [LongMessage] => This listing should contain product details from the eBay catalog. Add product details to this listing. [ErrorCode] => 21917108. The listing still submits successfully and includes all item specifics. [specificsArr] => Array ( [Type] => Mini Digital Camera [Brand] => Logitech [Megapixels] => 4.0 MP [Optical Zoom] => 6x [Manufacturer Warranty] => No [Country/Region of Manufacture] => Unknown [Bundled Items] => Array ( [0] => Case or Bag [1] => Lens Cleaning Kit [2] => Strap (Neck or Wrist) ) ) But would like a popup modal that would allow user to select from eBay Catalogue, and pull back the Catalogue ID, and have it submitted with Listing. Please only submit a Proposal if you are fully capable of performing this feature, access will be provided to add the code, Please be aware that you will be required to sign a standard Non-Disclosure Agreement, after project is successfully accepted by me. The information contained in my scripts are not to be copied or used for any other project.. Thank you for viewing this Project. Several Screen Shots have been included, a demo name will be given to the successful PHP developer.