3515076 - IBP: RTI RFC connection failed with error message "Error when opening an RFC connection..."

Test connection in transaction SM59 on external system, error message "Error when opening an RFC connection...". 

OR
Real-Time Integration job failed with error message "Error when opening an RFC connection (There is noSAP Cloud Connector (SCC) connected to your subaccountmatching the). "

OR
Save communication arrangement SAP_COM_0684 or SAP_COM_0685 failed with error/ warning messages

• "Error when opening an RFC connection (There is noSAP Cloud Connector (SCC) connected to your subaccount matching the). "
• Check SAP note 3110007 for setting up RTI connectivity.
• The connection check of the outbound service has failed.

  

 "Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental." 

• SAP Supply Chain Management (SCM)
• SAP Integrated Business Planning for Supply Chain 
• SAP ERP
• SAP S/4HANA

subaccount certificate, communication, connection refused, trace log, closed, connection, 401 unauthorized, invalid status of handshake , KBA , SCM-IBP-INT-RTI , Real Time Integration , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem