A required field is missing.
[1] missing_required_field rule reference
| Code | missing_required_field |
|---|---|
| Standard | GTFS |
| Source | MobilityData canonical GTFS Schedule validator |
| Severity | ERROR |
| Category | structure |
| Maturity | draft |
| Tags | mobilitydata, gtfs, structure |
| Retrieved | 2026-06-12 |
| Reference | https://gtfs-validator.mobilitydata.org/rules.html#missing_required_field |
