This is exactly what Basware helped NHS Wales achieve.
The Basware Network allows NHS Wales to reduce the amount of paper invoices being received, processed, and scanned. It also allows suppliers to integrate their order management systems so that purchase orders can be collected electronically, as soon as they are sent, and orders can be provided automatically with no user intervention required.
Currently, all local health boards / trusts within Wales are live and able to issue electronic purchase orders and invoices. Feedback from users indicates that the Basware solution is flexible, easy to use, and is meeting their requirements.