missing_required_agency_id

Agency id is required when there are multiple agencies.

ERRORGTFSintegritydraftMobilityData canonical GTFS Schedule validator

Related

• Source: MobilityData canonical GTFS Schedule validator

Citations

[1] missing_required_agency_id rule reference

Rule metadata

Code	missing_required_agency_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#missing_required_agency_id-rule