Purchase terms and line changes
Preserve price versions and confirm new lines, charges and amendment responses.
Apply a new purchase rate to the correct call-off version
Use the agreed effective event rather than the later receipt date.
Add a new purchase line without rewriting the original item
Keep a proposed addition separate from the existing issued line and its receipts.
Review an added freight charge against the issued PO
Do not treat goods receipt as approval for an extra charge.
Apply a supplier discount only to its agreed purchase line
Keep discount scope alongside the rate rather than spreading it over the whole order.
Match the supplier response to the released PO amendment
Keep buyer approval, amendment release and supplier acceptance on the same revision.