Control VI Quantity
This field controls the amount of quantities on Vendor Invoices (VIs) created from this PO.
When a Vendor Invoice (VI) is created against a PO, this checkbox sets a cap on the quantity on the VI. If the Control VI Quantity checkbox is checked, then the sum of all quantities specified on VI lines related to the PO line must be less than or equal to the sum of all quantities specified for the line in the original PO and its Mods.