How To Fix RT045 - RFC Problem: &1&2 (Function module: &3, RFC destination: &4)

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 045

• Message text: RFC Problem: &1&2 (Function module: &3, RFC destination: &4)

What causes this issue?

A remote function call (RFC) that was made by the monitoring
architecture was unsuccessful. The method shows the cause of the
problem (as reported by RFC) as well as the RFC function module that was
to be run and the RFC destination at which it was to be run.
The RFC problem is probably caused either by a communication problem
(the destination could not be reached) or by an execution problem in the
function module.

System Response

The RFC call could not be completed. The problem has most likely only
minor consequences for your use of the alert monitor and monitoring
architecture. Some monitoring functionality may not be available, but
the alert monitor and most of the display should still be available for
use.

How to fix this error?

If the reported error suggests a communication problem (system not
reached, timeout, and similar causes), then test the RFC destination in
transaction SM59. If the test is unsuccessful, check that the
definition of the destination is correct, that the destination
server/system is running and is connected to the respective message
handler, that no network problem has occurred, and that the gateway
processes in both the calling system and the destination are running.
If the reported error suggests a runtime problem (an exception in the
function module that was to run), then see if the problem is temporary
or was caused by a configuration error (no authorization, for example).
You can probably correct such problems yourself. Please report hard
program errors, such as syntax errors, to the responsible programmer or
to SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT045 - RFC Problem: &1&2 (Function module: &3, RFC destination: &4) ?

  The SAP error message RT045 indicates an RFC (Remote Function Call) problem. This error typically arises when there is an issue with the communication between SAP systems or between an SAP system and an external system. The message provides specific details about the function module and the RFC destination involved in the error.
  Cause of RT045 RFC Problem
  
  Network Issues: There may be network connectivity problems between the SAP systems or between the SAP system and the external system.
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect settings for the target system's IP address, port, or connection type.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to execute the function module.
  Function Module Issues: The function module specified in the error may not exist, may be inactive, or may have been changed in a way that it no longer works as expected.
  System Load: High load on the SAP system or the target system can lead to timeouts or failures in establishing the RFC connection.
  Firewall or Security Settings: Firewalls or security settings may be blocking the RFC communication.
  
  Solution for RT045 RFC Problem
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination mentioned in the error message.
  Ensure that the connection type, target host, and service are correctly set.
  Test the connection using the "Connection Test" option in SM59.
  
  
  Check Authorizations: Ensure that the user credentials used for the RFC connection have the necessary authorizations to execute the function module.
  Review Function Module: Check if the function module specified in the error message is active and functioning correctly. You can do this by going to transaction SE37 and entering the function module name.
  Monitor System Load: Check the performance of both the source and target systems. If either system is under heavy load, consider optimizing performance or scheduling the RFC calls during off-peak hours.
  Firewall and Security Settings: Ensure that any firewalls or security settings allow for RFC communication between the systems.
  
  Related Information
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SE37: Function Module Maintenance
  SM21: System Log
  ST22: Dump Analysis
  SM50: Process Overview
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to RFC problems or the function module in question.
  Logs: Review system logs and dumps for additional context on the error.
  
  If the problem persists after following these steps, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.