A supplier notified us that our Purchase Order (PO) cannot be processed since there is a new pricing for their products. Should I submit a change order request to revise the unit price on the PO?

If your PO was created using a non-catalog form, you can submit a Change Order Request Form to update the unit price. If your PO was for a catalog supplier, the unit price cannot be changed on the PO. Ask the supplier to honor the pricing on the PO since that was the catalog pricing available at the time the order was placed. Typically, if the supplier has new catalog pricing, they would submit their new pricing to UC and after the pricing is approved, the BearBuy catalog pricing is updated for future orders.