Our character automatically gets the tag "Baldurian", which states that we were raised in baldurs gate.
Now, if you choose the outlander background, it states that you were raised in one of the distant and hostile regions of Faerun.
So, assuming Baldurs gate is not one of such places, these descriptions don't match. I am not sure how to fix this; Maybe edit the Baldurian triat to say that you've lived there a long time, instead of being raised there? Idk
