stop_times_updates not strictly sorted E002 5 errors

stop_time_updates for a given trip_id must be strictly sorted by increasing stop_sequence

GTFS-rt trip_id does not exist in GTFS data and does not have schedule_relationship of ADDED E003 52 errors

All trip_ids provided in the GTFS-rt feed must exist in the GTFS data, unless the schedule_relationship is ADDED

GTFS-rt stop_sequence isn't provided for trip that visits same stop_id more than once E009 1 error

If a GTFS trip contains multiple references to the same stop_id (i.e., the vehicle visits the same stop_id more than once in the same trip), then GTFS-rt stop_time_updates for this trip must include stop_sequence

GTFS-rt stop_id does not exist in GTFS data E011 393 errors

All stop_ids referenced in GTFS-rt feeds must exist in GTFS stops.txt

All stop_ids referenced in GTFS-rt TripUpdates and VehiclePositions feeds must have the location_type = 0 E015 399 errors

All stop_ids referenced in GTFS-rt TripUpdates and VehiclePositions feeds must have the location_type = 0 in GTFS stops.txt

Sequential stop_time_update times are not increasing E022 8 errors

stop_time_update arrival/departure times between sequential stops should always increase - they should never be the same or decrease.

vehicle_id not populated W002 1 391 errors

vehicle_id should be populated for TripUpdates and VehiclePositions

schedule_relationship not populated W009 2 610 errors

trip.schedule_relationship and stop_time_update.schedule_relationship should be populated