This feature lets you control what will happen to a purchase order line that is referenced by a sales order line when a user manually deletes that sales order line. This feature does not affect direct delivery scenarios. You can set the system to delete a referenced purchase order line entirely, or to delete the reference only (thereby keeping the purchase order line but removing the marking). By default, the system will keep the purchase order line but remove the marking. Set this option using the new "Sales order line deletion policy" setting on the "Accounts receivable parameters" page.