Rather than reinventing the wheel and implementing a bespoke mechanism to exchange files, it was decided to use Apache ActiveMQ which is a popular and powerful open source messaging system.

No matter what happens to the physical network connections between KonaKart and the ERP or even if the recipient is temporarily down, the message service guarantees that the message will be delivered to the recipient provided there is no catastrophic loss to the persistent data store of a broker along the message route.

Apache Active MQ supports many cross language clients and protocols which should easily allow any ERP system to read from and write to the message queues.