How To Fix TN158 - Error during RFC call

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 158

• Message text: Error during RFC call

What causes this issue?

An error occurred when executing an RFC module.
Return code .......: &V1&
Destination .......: &V2&
Module ..........: &V3&
Meaning of the return code:
03 System failure
04 Communication failure
Possible causes of the error:
03 No authorization for logging on to the target system
04 Timeout when connecting (does partner exist?)

System Response

The function terminates.

How to fix this error?

Inform the system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TN158 - Error during RFC call ?

  The SAP error message TN158, which indicates "Error during RFC call," typically occurs when there is a problem with Remote Function Call (RFC) communication between SAP systems or between an SAP system and an external system. This error can arise due to various reasons, and understanding the cause is crucial for troubleshooting.
  Causes of TN158 Error
  
  
  Network Issues: Problems with the network connection between the systems can lead to RFC call failures. This includes issues like firewalls blocking the connection, network outages, or misconfigured network settings.
  
  
  Configuration Errors: Incorrect configuration of RFC destinations in the SAP system can cause this error. This includes incorrect settings in transaction SM59, such as wrong target host, system number, or logon credentials.
  
  
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to execute the function module or access the required data.
  
  
  Function Module Errors: The function module being called may have its own issues, such as being inactive, having incorrect parameters, or encountering runtime errors.
  
  
  System Performance: If the target system is under heavy load or experiencing performance issues, it may not be able to process the RFC call in a timely manner.
  
  
  Version Compatibility: Incompatibility between different SAP versions or between SAP and external systems can also lead to RFC errors.
  
  
  Solutions to TN158 Error
  
  
  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.
  
  
  Review RFC Destination Configuration: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that the target host, system number, and logon credentials are correct. Test the connection from this transaction.
  
  
  Check Authorizations: Verify that the user credentials used for the RFC call have the necessary authorizations to execute the function module. You can check this in transaction SU53 after the error occurs.
  
  
  Debug the Function Module: If you have access, debug the function module being called to identify any issues with the parameters or logic that may be causing the error.
  
  
  Monitor System Performance: Check the performance of the target system. Use transaction SM50 or SM66 to monitor active processes and see if the system is overloaded.
  
  
  Check SAP Notes: Look for any relevant SAP Notes that may address known issues related to the specific function module or RFC call you are using.
  
  
  Consult Logs: Review the system logs (transaction SM21) and the developer trace files (transaction ST22) for any additional error messages or information that can help diagnose the issue.
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SU53: Authorization Check
  ST22: Dump Analysis
  SM21: System Log
  SM50/SM66: Process Overview
  
  
  
  SAP Notes: Always check the SAP Support Portal for any relevant notes that may provide fixes or workarounds for specific issues related to RFC calls.
  
  
  Documentation: Refer to the official SAP documentation for detailed information on RFC and troubleshooting techniques.
  
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the TN158 error during RFC calls.