3184490 - Which types of changes in purchase orders trigger the order change notification email?

I have enabled the configuration Send notification to suppliers when purchase orders are changed to receive email notifications for changes in my customer's orders. What types of purchase order updates trigger this notification?

Send notification to suppliers when purchase orders are changed, email notifications, notifications for changed POs, changed orders, changed purchase orders, updated POs, updated orders, updated purchase orders, network notifications , KBA , migration source: knowledge@ariba , network notifications , migrated on: 2022-04-02 18:32:33 , purchase orders , SBN-AN-ADM , Administration (Buyer & Supplier Account Administration) , How To