How To Fix RSDD_ZA138 - RFC connection check

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 138

• Message text: RFC connection check

What causes this issue?

The system checks for any problems in the RFC connection between the SAP
NetWeaver BW Accelerator and the SAP system. If possible, problems are
dealt with automatically. Otherwise the status of the check is displayed
as <ZK>red</>. The details of the check contain a note indicating that
the problem needs to be resolved manually.

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?

Follow the instructions of any action proposed. Information about any
manual actions required can be found in the details of the check.

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 RSDD_ZA138 - RFC connection check ?

  The SAP error message RSDD_ZA138 typically indicates an issue with the RFC (Remote Function Call) connection when trying to access or execute a query in SAP BW (Business Warehouse). This error can occur due to various reasons, including configuration issues, network problems, or authorization issues.
  Causes:
  
  RFC Connection Issues: The RFC connection to the BW system may not be properly configured or may be down.
  Network Problems: There could be network connectivity issues between the systems involved.
  Authorization Issues: The user may not have the necessary authorizations to execute the query or access the data.
  System Configuration: Incorrect settings in the BW system or the source system can lead to this error.
  Transport Layer Issues: If the transport layer is not correctly set up, it can lead to communication problems.
  
  Solutions:
  
  
  Check RFC Connection:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the RFC connection (e.g., connection type, target host, and system number).
  Test the connection to ensure it is working properly.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues between the systems. You can use tools like ping or traceroute to check connectivity.
  Check firewall settings to ensure that the necessary ports are open.
  
  
  
  User Authorizations:
  
  Verify that the user has the necessary authorizations to access the BW system and execute the query.
  Check roles and profiles assigned to the user in transaction PFCG.
  
  
  
  System Configuration:
  
  Review the configuration settings in both the BW and source systems to ensure they are correct.
  Check for any recent changes that might have affected the configuration.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages that might provide more context.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that might address this specific error message or provide additional troubleshooting steps.
  
  
  
  Restart Services:
  
  If the issue persists, consider restarting the relevant services or the entire system, as this can sometimes resolve transient issues.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59 (RFC Destinations)
  PFCG (Role Maintenance)
  SM21 (System Log)
  SLG1 (Application Log)
  
  
  
  SAP Support: If the issue cannot be resolved with the above steps, 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 RSDD_ZA138 error related to RFC connection checks in SAP BW.