[neoandr]

for easy understanding,
Assume that carrier is sending Shipment Event XML (POD) for a shipment and the carrier generaly dont have Shipment ID but a refernce number of that particular shipment. So OTM should be able to map that inbound Status XML to its shipment and update the event status. It is possible throught Int Saved Queries.

Incoming xml contains:
1. Integr Saved Query name
2. Argument ID ( Reference Qualifer)
3. Argument Value ( Refnum Value)

So once the xml is received the integration saved query mentioned in that XML executes and finds out the shipment which contains the refernce value and updates the status of it.

i hope this should clarify ur doubts.