Sometimes, enterprises have a ERP system which is already overseeing all the business activities. Then a WMS (Warehouse Management System) is set up.
The WMS can be set up to respond to ERP event information and send back action event reports back to ERP.
For example, ERP sends a procurement PO(Purchase Order) to WMS with the expected delivery date. When the goods arrive, workers can use mobile scanner to register the event “Goods Receipt”. The event result and any discrepancy report is sent back to ERP.
In this way, the WMS becomes a virtual sub-system to the ERP and they are independent of each other. This responsive process can be effected through file exchange in a mutually agreed format.