Why Does UPS Say "A missing commercial invoice is causing a delay"?

The UPS tracking sometimes says "A missing commercial invoice is causing a delay". We don't know why this happens. We always send x3 invoices in the shipping pouch and x1 inside the package.

This situation usually resolves itself without UPS contacting you or us. Reddit forums suggest that this message is an excuse for a delay caused by UPS. Please be patient and the shipment status should be resolved.

Mis-reporting conditions is an endemic problem at UPS and other couriers. We also see it occasionally when pickups are missed and it's reported that a pickup was attempted or happened when it didn't. Operatives blaming the customer for a delay hides problems and makes productivity look better.