How To Fix TN154 - Error during RFC call

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 154

• 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&
RFC error message: &V4&
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 TN154 - Error during RFC call ?

  The SAP error message TN154, 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 TN154 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 Issues: The function module being called may not exist, may be inactive, or may have been changed in a way that it no longer works as expected.
  
  
  System Performance: If the target system is under heavy load or experiencing performance issues, it may not respond to the RFC call in a timely manner, leading to a timeout.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also lead to RFC errors, especially if there are changes in the function modules or interfaces.
  
  
  Solutions to TN154 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 ID used for the RFC call has the necessary authorizations to execute the function module. You can check this in transaction SU53 after the error occurs.
  
  
  Validate Function Module: Ensure that the function module being called exists and is active. You can check this in transaction SE37. If it has been modified, ensure that it is compatible with the calling program.
  
  
  Monitor System Performance: Check the performance of the target system. If it is under heavy load, consider optimizing performance or scheduling the RFC calls during off-peak hours.
  
  
  Check for Updates or Patches: Ensure that both systems are up to date with the latest patches and updates, as this can resolve compatibility issues.
  
  
  Review Logs: Check the system logs (transaction SM21) and the RFC trace (transaction SM58) for more detailed error messages that can provide additional context for the issue.
  
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SU53: Authorization Check
  SE37: Function Module
  SM21: System Log
  SM58: Asynchronous RFC Monitor
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC calls and the TN154 error.
  
  
  Documentation: Review SAP documentation for RFC and troubleshooting guidelines to gain a deeper understanding of how RFC works and common issues.
  
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the TN154 error during RFC calls.