Can the Purchase Order form display the name of the user who created it?
The system does not save, against the PO, the name of the user who converted that PO from MRP (and PO's *should* be converted via MRP as opposed to manually creating them). If you need to save the name of the person who converted the PO (from MRP) then you would need to manually type that information into the PO 'Header' notes after you've converted the suggested PO to a real PO. Those notes should print on the form automatically.