2895942 - How to set up an E-Mail notification for Tasks that are not appearing under Task Subscription

For example you wanted to set up email notifications to be sent when purchase orders are approved.

 or you did not find the task available in task subscriptions.

SAP Business ByDesign

You have to set up work flow rules for those scenarios that  does not exist under Home ->Subscribe to tasks

Go to Application user management work center

Go to work flow rules view

Follow steps  given in SCN community blog  in below link

https://blogs.sap.com/2015/07/27/how-to-create-workflow-rule-to-send-email-and-notifications/

If you have not found  what you are looking for then contact your partners to help develop it for you.

Refee the help center document

https://help.sap.com/viewer/2754875d2d2a403f95e58a41a9c7d6de/1905/en-US/2dd306f1722d10149fa9d590609d47e9.html

also refer KBA :   2658668 - How to set up an E-Mail notification for Tasks

Work flow rule, task subscription, email notification, task notification,new notification , KBA , AP-POP-PO , Purchase Order , AP-SIP , Supplier Invoice Processing , Problem