For sales orders, where you add Product to Sale Order, it would be helpful if the "Search by Other Fields" had more options, such a dropdown list where you could search things like PO number, arrival date, expiry date etc. This would be helpful in situations where warehouses do cross-docking and goods need to go out immediately. The operator could open "Search by other fields" and input arrival date or PO number. I understand you could get around this by setting up a custom attribute and calling it as purchase order #, but I think this should be a default function without having to add this workaround.