SAP_COM_0200 Communication Scenario is one of the interesting configuration in SAP S/4HANA Cloud Platform Application Services. I am please to share with you a white paper document that I just released which explains in full details and step-by-step how to configure it and test it in SAP S/4HANA Cloud Platform. All the details that are needed, can be found in the following WIKI:
https://wiki.scn.sap.com/wiki/x/QQeIHg
Thank you