Item quantity cannot be less than the total quantity used on existing inbound shipments in purchase order

AI generated answer (using internal Slack threads):

Based on the conversations, it appears that the quantity of a Purchase Order (PO) cannot be adjusted to be less than the total quantity used on existing inbound shipments. This is because the system needs to ensure that the quantity in the PO matches the quantity in the inbound shipment to maintain consistency and accuracy in inventory management. If you need to adjust the quantity of a PO that is linked to an open inbound shipment, you can do so, but not lower than what is already linked to the inbound shipment. If the quantity is lower than what is in the inbound shipment, you would have to update the inbound shipment and possibly an ownership transfer first. In the case where a supplier over ships and tells you to keep the extra, you can add overages on item receipts if you have the 'allow overages in item receipt' feature enabled. When you bill, the extra overages are billed on the same PO. However, if this messes with your average cost or bill, you might need to make an inventory adjustment. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******