Fix route_short_name_too_long in GTFS

Diagnosis

What this notice means

The short label exceeds the rule's recommended length.

Operational effect

The label may be truncated on maps and compact departure displays.

Scope

Report field	Type	Meaning
`csvRowNumber`	integer	The row number of the faulty record.
`fieldName`	string	Context included in the report.
`filename`	string	Context included in the report.
`routeId`	string	The id of the faulty record.
`routeShortName`	string	The faulty record's `route_short_name`.

Repair

1
Check the operator's actual short route designation.
2
Put a real short number or label in route_short_name and a descriptive name in route_long_name. If no short name exists, use the long name alone; do not invent an unfamiliar abbreviation.
3
Check the result
After a repair, rebuild the archive and validate it again. Confirm that the affected records are correct and that no new related notices appeared. A reviewed warning or informational notice may remain when it describes intentional, supported data.

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Sources