When attempting to cancel a purchase order, you may receive an error: Do Not Post is not a valid post status. This can occur when the post status of a line item is set to Do Not Post prior to the business rul for the line items status is changed.
1. From the Accounts Payable module, navigate to Configuration> Business Rules 2. Select the Line Item option from the menu 3. Unmark the box to Exclude "Do not post" as a post status 4. Cancel your Purchase order.
Note: If desired, you may change the business rule back to Exclude the Do not post status for line items by navigating back to Configuration> Business Rules> Line Item and mark the box again.