When a purchase order is sent to the supplier, a copy is also sent to Conrab Opto. The purchase order is stored in Conrab Opto and is then retrievable. If the order confirmation is also imported, it is automatically linked to the purchase order itself.
When the invoice arrives, marked with the purchase order number, this is also linked to the purchase order.
The entire business flow of the documents is linked in Conrab Opto.