We have configured OCI on S/4 HANA but what is pending is a ways confirm our PO's back to the vendor. In the S/4 HANA OCI/Punchout/Self service procurement cookbook nothing was mentioned about this. In SRM we used to have a BAPI which was doing this (BAPI_POEC_XML_SEND). So what I am looking for is the way in standard S/4 HANA to confirm PO's back to the vendor. Does anyone know?