How To Fix PMMO_BASIS011 - Unknown RFC communication failure

SAP Error Message - Details

• Message type: E = Error

• Message class: PMMO_BASIS - Messages for PMMO Basis Objects

• Message number: 011

• Message text: Unknown RFC communication failure

What causes this issue?

An RFC call was unexpectedly terminated. No specific reason is known for
the communication breakdown.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PMMO_BASIS011 - Unknown RFC communication failure ?

  The SAP error message PMMO_BASIS011, which indicates an "Unknown RFC communication failure," typically arises when there is an issue with Remote Function Call (RFC) communication between SAP systems or between an SAP system and an external system. This error can occur in various scenarios, such as during data transfer, when calling remote functions, or when accessing external services.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP systems or between the SAP system and external systems can lead to RFC communication failures.
  Configuration Errors: Incorrect configuration of RFC destinations in the SAP system can cause communication failures. This includes incorrect settings in transaction SM59.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Firewall Restrictions: Firewalls or security settings may block the necessary ports for RFC communication.
  SAP Kernel Issues: Bugs or issues in the SAP kernel or related components can also lead to RFC failures.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems involved. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that the connection type, target host, and system number are correctly configured.
  Test RFC Connection: In transaction SM59, use the "Test Connection" feature to verify that the RFC destination is working correctly. This will help identify if the issue is with the configuration or the network.
  Check Authorizations: Ensure that the user credentials used for the RFC connection have the necessary authorizations to execute the required functions.
  Review 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 RFC failure.
  Firewall Settings: If applicable, check the firewall settings to ensure that the necessary ports for RFC communication are open.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues related to RFC communication failures.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  ST11: Developer Traces
  
  
  SAP Support: If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the steps you have already taken.
  
  By following these steps, you should be able to diagnose and resolve the PMMO_BASIS011 RFC communication failure in your SAP environment.