How To Fix RLFW441 - aRFC call failed with sy-subrc = &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: RLFW - Messages for runlevel framework

• Message number: 441

• Message text: aRFC call failed with sy-subrc = &1.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RLFW441 - aRFC call failed with sy-subrc = &1. ?

  The SAP error message RLFW441 indicates that an asynchronous Remote Function Call (aRFC) has failed, and the system has returned a specific return code (sy-subrc) that provides more context about the failure. The return code can vary, and understanding it is crucial for diagnosing the issue.
  Possible Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved in the aRFC call.
  Configuration Issues: The RFC destination may not be correctly configured, or the target system may not be reachable.
  Authorization Problems: The user executing the aRFC may not have the necessary authorizations to perform the operation.
  System Load: The target system may be overloaded or experiencing performance issues, leading to timeouts or failures.
  Function Module Issues: The function module being called may have errors or may not exist in the target system.
  Transaction Errors: There may be issues with the data being processed, such as missing or incorrect parameters.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues between the systems. You can use tools like ping or traceroute to diagnose connectivity.
  Verify RFC Destination: Go to transaction SM59 and check the configuration of the RFC destination. Test the connection to ensure it is working correctly.
  Review Authorizations: Check the user authorizations for the user executing the aRFC call. Ensure they have the necessary permissions to access the function module.
  Monitor System Performance: Check the performance of the target system. Use transaction SM50 or SM66 to monitor active processes and system load.
  Debug the Function Module: If you have access, debug the function module being called to identify any issues with the logic or data being processed.
  Check Logs: Review the application logs (transaction SLG1) and system logs (transaction SM21) for any related error messages that could provide more context.
  
  Related Information:
  
  
  Return Codes: The value of sy-subrc is critical for understanding the specific reason for the failure. Common return codes include:
  
  0: Success
  1: General error
  2: Function module not found
  3: Authorization failure
  Other codes may indicate specific issues related to the function module or data.
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues related to aRFC failures.
  
  
  Documentation: Review the SAP documentation for aRFC and related function modules to understand their expected behavior and requirements.
  
  
  By following these steps, you should be able to diagnose and resolve the issue related to the RLFW441 error message. If the problem persists, consider reaching out to SAP support for further assistance.