[1] For example, a POD can establish that carrier has satisfied its terms of a contract of carriage for cargo by confirmation of delivery to the recipient or consignee.
In the United States, DHL, UPS and FedEx as well as the US postal service (USPS) provide proof of delivery.
Electronic proof of delivery (ePOD) can exchange new data as well as corrections to previously transmitted messages.
Legal complications can arise if the recipient company refutes receiving a corrected product specification or a message about a delayed shipment.
[citation needed] Message-oriented middleware (MOM) is a class of software used to implement computer based business document exchange.