TODS-W313

Supplement deletes a row that is not in GTFS

WARNING

Needs a companion GTFS feed.

A supplement row sets TODS_delete=1 but no row with that primary key exists in the companion GTFS file. Nothing is deleted; this usually means the ID is wrong or the GTFS feed changed.

Spec reference: https://tods-transit.org/spec/#supplement-files