Carriers send location codes and names that do not always agree, and some codes are valid identifiers
for a completely different place. A leg routed through somewhere implausible for the trade lane is
worth reporting; the correction applies to every shipment that carrier codes the same way.
Example
A shipment on a trade lane is routed through a place that seems implausible. The carrier’s location code and place name disagree, and the code identifies a different location. Report the leg; the correction will apply to every shipment the carrier codes the same way.