I learned from the discord server this means that some of my pokemon are from different games with the same TID and SID. It apparently is possible through RNG abuse but the issue is that both of my pokemon that have this error originated in this game version. Not traded or anything else. Pkhex says my pokemon are legal but the tid error comes up when I click the "Verify all PKMs" option. So is there a way to fix this or should I just ignore it?