duplicate_geography_id

Geography id is duplicated across multiple files.

ERRORGTFSintegritydraftMobilityData canonical GTFS Schedule validator

Related

• Source: MobilityData canonical GTFS Schedule validator

Citations

[1] duplicate_geography_id rule reference

Rule metadata

Code	duplicate_geography_id
Standard	GTFS
Source	MobilityData canonical GTFS Schedule validator
Severity	ERROR
Category	integrity
Maturity	draft
Tags	mobilitydata, gtfs, integrity
Retrieved	2026-06-12
Reference	https://gtfs-validator.mobilitydata.org/rules.html#duplicate_geography_id-rule