How To Fix ESH_EX016 - RFC ping: RFC communication failure during back connection from hub

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_EX - Extraction

• Message number: 016

• Message text: RFC ping: RFC communication failure during back connection from hub

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_EX016 - RFC ping: RFC communication failure during back connection from hub ?

  The SAP error message ESH_EX016 indicates an issue with RFC (Remote Function Call) communication, specifically during a back connection from a hub system. This error typically arises in scenarios involving SAP Enterprise Search or when using a distributed architecture where multiple systems communicate with each other.
  Cause:
  The error can be caused by several factors, including:
  
  Network Issues: There may be network connectivity problems between the hub and the backend system.
  RFC Destination Configuration: The RFC destination may not be correctly configured or may be missing.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  Firewall Restrictions: Firewalls or security settings may be blocking the RFC communication.
  System Configuration: Incorrect settings in the SAP system configuration related to the RFC connections.
  Service Availability: The service or function module being called may not be available or may be down.
  
  Solution:
  To resolve the ESH_EX016 error, you can follow these steps:
  
  
  Check Network Connectivity:
  
  Ensure that there is proper network connectivity between the hub and the backend system. You can use tools like ping or traceroute to verify connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination used for the connection. Ensure that it is correctly set up and test the connection.
  
  
  
  Check Authorizations:
  
  Ensure that the user credentials used for the RFC connection have the necessary authorizations to perform the required actions.
  
  
  
  Review Firewall Settings:
  
  Check if there are any firewall rules that might be blocking the RFC communication. Ensure that the necessary ports are open.
  
  
  
  Examine System Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages or clues related to the issue.
  
  
  
  Test RFC Functionality:
  
  Use transaction SE37 to test the specific RFC function module that is being called to ensure it is working correctly.
  
  
  
  Check SAP Notes:
  
  Look for any relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  
  
  
  Restart Services:
  
  If applicable, restart the relevant SAP services or the entire system to clear any temporary issues.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on RFC communication and troubleshooting.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the ESH_EX016 error effectively.