Purchase order troubleshooting If you have problems with purchase orders, use this troubleshooting information. ezyVet shows a Purchase Order Expense: error when you save a purchase order recordezyVet shows an Open Purchase Orders error when you try to disable a product recordezyVet shows a you tried to add lines with a different supplier error when you save a received invoiceParent topic: Purchase ordersRelated conceptsPurchase order statusesRelated tasksMake a purchase orderSet the number of line items for new purchase orderRelated informationPurchase order configuration