For the most part it is indeed aligned with the PDOK imagery; but that is not correct. It is missing alignment with the BGT footprint, building parts are not connected to each other etc... If you want to take an example; there is a conference center outline with Hal 5 fixme, name 'Rai Europahal (1-5) and a note. Then there is a similar outline for the building with is imported from BAGl butr doesn't align with the BGT anymore. There is an outline building:prt with heigth 12; another with height 8 and another with height 16 for the part with the round roof. All overlapping each other, but never sharing any walls and nodes.

So this is not correctly traced and should deserve a bit of love, tender & care ;-)

But you really would need to dive into it, which is a project on its own.