It would be useful to be able to add additional money to a PO by using another requisition. If the shipping cost was not known at the time of the requisition and the invoice arrives for more than the PO. It would be nice to add this cost to the same PO# instead of voiding the PO and getting a new Req & PO in order to process the invoice. It could be an option in the PO type dropdown list. We use the process of PO generation acts as our pre-audit requirements in NC.