How To Fix RSDD_ZA420 - Checks RFC server configuration and tries to repair if necessary

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 420

• Message text: Checks RFC server configuration and tries to repair if necessary

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_ZA420 - Checks RFC server configuration and tries to repair if necessary ?

  The SAP error message RSDD_ZA420 typically indicates an issue with the Remote Function Call (RFC) server configuration in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error can occur when the system is unable to connect to the RFC destination or when there are issues with the configuration of the RFC server.
  Cause:
  
  RFC Destination Issues: The RFC destination may not be correctly configured, or it may be pointing to an incorrect or inactive system.
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations.
  System Configuration: The SAP system may not be properly configured to handle the RFC calls, or there may be issues with the underlying transport layer.
  Service Availability: The target system may be down or not available for connections.
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the RFC destination that is being used. Ensure that the target system is correctly defined and that the connection type is appropriate (e.g., TCP/IP).
  Test the connection using the "Connection Test" button to ensure it is working.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the systems. You can use tools like ping or traceroute to check connectivity.
  
  
  
  Authorization Check:
  
  Verify that the user credentials used for the RFC connection have the necessary authorizations to access the target system.
  
  
  
  System Configuration:
  
  Check the configuration of the SAP system to ensure that it is set up to handle RFC calls. This may involve checking the instance profile and ensuring that the necessary services are running.
  
  
  
  Check Target System:
  
  Ensure that the target system is up and running. If it is down, you will need to bring it back online.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the developer trace files (transaction ST11) for any additional error messages that may provide more context about the issue.
  
  
  
  Repair RFC Configuration:
  
  If the error message indicates that the system is attempting to repair the RFC configuration, monitor the process and check if it resolves the issue. If not, manual intervention may be required.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP documentation for RFC configuration and troubleshooting to ensure that all steps have been followed correctly.
  Support: If the issue persists after following the above steps, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the RSDD_ZA420 error in your SAP environment.