What does the warning mean?

Georgia does the same thing. When I moved here a couple years ago, I called and they sent an officer out to my home to verify the VIN. He enjoyed looking at the car! Then he gave me the completed and signed form to take to the DMV to get title.

To get a "title" or registration?
In other words, did you have an out of state title already?
I'm wondering because if you had any paperwork from another state you would not have needed the VIN check to get a tag.
If you didn't have a title GA won't give one.
Although I contacted the legislator responsible for that a 2 years ago and he told me they were working on something to title older cars.
For what that's worth.