I'm trying to publish a survey from a feature service (specifically to a related table in that feature service), but I keep getting this error:

Except every single one of the fields in the survey is in the table. I've combed through it multiple times and can't find anything different between the two. I've posted other surveys in a similar manner before and never encountered this problem.
The only thing that I see when looking at the Schema Preview is that there is a geopoint field that is not in my table. Could this be the issue? If so, what to do about it? If not, what else could it be?