I select all locations and go through and uncheck: Korea, Taiwan, Brazil, and South Africa. Those are the ones that get you denied for not having a ratings certificate.
Slightly OT, but as a South African games journalist trying to raise the status of indie development in our humble local industry, it makes me really sad to see that.
I'd imagine that developing here, even with the intention of selling to our own market, would be more of a hassle than just selling to the US or Europe.
I'll get in touch with someone at MS over here and see if maybe this process can at least be simplified. I doubt it'd be possible to remove the requirement.