How To Fix TN154 - Error during RFC call

TN154 - Overview

• 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.

TN154 - Details

• 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,