feedvalidator returns that the column timepoint in the table stop_times.txt is an unrecognized column. However Google lists it as a valid column.
Unrecognized Column
Unrecognized column timepoint in file stop_times.txt. This might be a misspelled column name (capitalization matters!). Or it could be extra information (such as a proposed feed extension) that the validator doesn't know about yet. Extra information is fine; this warning is here to catch misspelled optional column names.
in line 1 of stop_times.txt
trip_id arrival_time departure_time stop_id stop_sequence stop_headsign pickup_type drop_off_type shape_dist_traveled timepoint
feedvalidator returns that the column
timepoint
in the tablestop_times.txt
is an unrecognized column. However Google lists it as a valid column.