Cancelling a purchase order

Purchase orders cannot be cancelled if it has been received. Use this method if you know the transaction number of the purchase order

In the Navigation panel, go to Purchasing then Orders.
Enter the transaction number and search for the order you are receiving. Alternatively, you can search on the customer name.
Select the order in the list.
If a purchase order has been fully received you will not be able to cancel the order.
On the top panel click on button Cancel Order
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The cancelled purchase order status will be set to either

Cancelled if there are no posted purchase receipts against the order, or
Posted if there are no posted purchase receipts against the order e.g., partly received purchase order; this is to indicate the remainder of the order was cancelled and there had been receipts posted against the order.

Cancelling a partly received purchase order

If you have received some but not all of the goods on a purchase order, you will not be able to delete it. However, you are able to cancel it. This will have no effect on the goods you have already received and the quantity on hand for those items will not change, but it will mean that the system will then ignore the remainder of the purchase order. Those items that were on the purchase order and not yet received in and previously marked as being on order, will now be updated to show as no longer on order.

If the goods later arrive, you will need to create a new purchase order for those items.