My Mario Kart License does not have a license number, while other Mii's on this system do. Why?

Question

I have four Mii's and three have license numbers. I removed this Mii from Mario Kart and recreated it, but still no license number

Answer 1

Nobody seems to have any idea of how to help.

So call Nintendo.

Answer 2

I think its 1 or 2 per system.