How to set up email notification for workflow of purchase requisition and Purchase Order

[SAPSupport]

how to activate flexible workflow email notifications for purchase orders and purchase requisitions  

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[SAPSupport · Accepted solution]

Please refer to the documentation below 
Purchase Order 
https://help.sap.com/docs/SAP_S4HANA_CLOUD/0e602d466b99490187fcbb30d1dc897c/bd5b25de619d4f4da609fa86...

Purchase Requisition 
https://help.sap.com/docs/SAP_S4HANA_CLOUD/0e602d466b99490187fcbb30d1dc897c/f83f5260160d40a4ac1797e7...

You create an email template with the exact format described in the SAP Help for the different scenarios. The the system will 
pick up this template and send an email notification to the designated user