In the old access key based API, you could query by an identifier coming from the customer side, such as the order number:
$tracking = new Ups\Tracking($accessKey, $userId, $password);$tracking->setShipperNumber($my_shipper_number);$shipment = $tracking->trackByReference($order_id);The tracking number would then come back in
$shipment->Package->TrackingNumber;It seems like in the new API, UPS TrackService API_oauth2 requires a tracking number. What if I don't have a tracking number because I'm trying to look it up? (These packages were shipped by WorldShip, but the people using this don't want to log tracking numbers for every package.)