Just a note that, as the guy who helps maintain that tool, that on the last update when we trued up and added the 11ac Wave2, fixed antennas, etc, that it reults in the country codes having to be created on all new APs. And the tool is writen that we need to manually do each antenna with each country code. That's a pretty big list (https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes).
So, what I did was did the 20 countries with the MOST outdoor accounts, and then have been doing them as needed when the smaller/less common countries as needed.
So if you hit this issue, try another country first, then if not, open a TAC case and they can send me a note with the country that needs to be added.