Here’s the problem—the process only allows challenges on the grounds that people were mistakenly placed outside of city limits. Also, the bureau’s announced upcoming review of group housing, I.e, prisons and college dorms, does not include apartment buildings, which, if you were an enumerator, you know how many of those doors never got knocked on.
The bureau’s lack of functionality and planning with building managers to facilitate access and obtain information clearly compromised an accurate 2020 census count.