I have questions about this topic. In my scenario, I have an application that is on cloud and on-premise SAP system, cloud connector is being used. I have read through the tech guide: https://cloudplatform.sap.com/scenarios/techguides.html
In a nutshell, can I just say Principle Propagation is used to make sure the caller of SAP system is a validated and session alive user in cloud platform?
If it is true, does the user name have to be same for cloud platform and SAP system?