In Navision, Purchase Order (PO) approval can be a hierarchy level. We can setup PO made by user A and then approved by user B, after user B Approved the PO, the PO must be approved by user C and user D.
Sometimes we do not know in which level the PO has been approved. When we see in the PO menu, the status of the PO still ''Pending Approval''. To know this PO still pending on whose user, NAV provide a menu to see it.