I have a client looking to enable an elusive shipping option for their listings. I cannot figure out where to enable this shipping option through the API if it's even possible. When you create/revise a listing and add a shipping option, if you don't select the location and you don't select a service the following option appears: "*Additional delivery locations - buyers contact for costs*" with two options: "*Will post to the United Kingdom and the following*" and "*Will post Worldwide*". I've uploaded the photo to Imgur since the image upload here doesn't seem to work -
https://imgur.com/a/ZuDEj So is it possible to create a new *InternationalShippingServiceOption* with the *ShipToLocation* set to "Worldwide" but without a shipping service or cost? Any ideas?