OK, thanks.

So basically for Xbox players the data HAS been sold, it just hasn't updated the database with the name? That must suck.
Cheers!
That's my understanding, but I believe the CMDR name does resolve over time.
This thread discusses it, and I'm assuming from the OP that they mapped a body that had already been discovered (but was un-mapped) and initially they then saw validating, but it resolved to their name after a while.
This suggests to me that the validating issue happens when you are tagging a body (either discovery or mapping) in a system where other bodies have already been scanned and / or mapped and it's just a matter of the system taking longer to populate database entries with a specific CMDR name because there are already some fields populated, and it's not specific to xbox. All I can say from my experience is that I've not had it happen to me (on PC), and I've come back from exploration trips with hundreds of systems of scan data, and my name is there in the system map when I check after selling that data, but all of those systems are first discovered by me.
It should be said that since the introduction of the FSS, if you can see a body in the system map when you jump into a new system, then it has been scanned by another player. So when you see a body that has a name for either first discovered or first mapped, even if it's validating then you're not going to get your name on it.
Edited to add - I rarely see the validating thing, because since the FSS, if I can see that a system has already been touched by another player (if there's nothing on the scanner when I drop in until my FSS does its passive scan then no other player has been there) then I'm not interested and move on. However, earlier this year I did a quick explo trip, and on the way back, I dropped into a system less than 500Ly out which EDDI informed me was an unusually old star, and when I looked at it in the system map I saw validating as first discovered. However, when I got back, that name had resolved to a real CMDR name.