Originally Posted by WillCAD

Is your license RealID compliant? TSA isn't supposed to require RealID compliant ID (the current deadline is May 23, 2023, but it's been extended multiple times), but it's possible that was the problem. If the ID scanner was looking for a RealID compliant license and your isn't compliant, it would prompt for a second ID.

I suspect that this is how the RealID compliance thing will work once it's actually put into place, whether it's in place next year or delayed again.