How To Fix RLFW000 - Server list of the remote subsystem is not defined.

SAP Error Message - Details

• Message type: E = Error

• Message class: RLFW - Messages for runlevel framework

• Message number: 000

• Message text: Server list of the remote subsystem is not defined.

Self-Explanatory Message

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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 RLFW000 - Server list of the remote subsystem is not defined. ?

  The SAP error message RLFW000 indicates that the server list of the remote subsystem is not defined. This error typically occurs in scenarios involving Remote Function Calls (RFC) or when trying to connect to a remote system, such as when using SAP's Distributed Systems or when integrating with other SAP or non-SAP systems.
  Cause:
  The error can be caused by several factors, including:
  
  Missing Configuration: The RFC destination for the remote subsystem is not configured correctly in the SAP system.
  Incorrect RFC Destination: The RFC destination may not exist, or it may be incorrectly defined.
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the remote subsystem.
  Authorization Issues: The user may not have the necessary authorizations to access the remote subsystem.
  System Configuration: The remote system may not be properly configured to accept connections from the SAP system.
  
  Solution:
  To resolve the RLFW000 error, you can follow these steps:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Verify that the RFC destination for the remote subsystem is defined and configured correctly.
  Ensure that the connection type (e.g., T, 3, etc.) is appropriate for your use case.
  
  
  
  Test Connection:
  
  In transaction SM59, select the RFC destination and use the "Test Connection" button to check if the connection to the remote subsystem is successful.
  If the test fails, check the error message for more details.
  
  
  
  Review Configuration:
  
  Ensure that the necessary parameters (like target host, system number, client, user, password, etc.) are correctly set in the RFC destination.
  If using a secure connection (e.g., SNC), ensure that the SNC parameters are correctly configured.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no network issues preventing the SAP system from reaching the remote subsystem.
  You can use tools like ping or telnet to check connectivity to the remote server.
  
  
  
  Authorization Check:
  
  Ensure that the user credentials used in the RFC destination have the necessary authorizations to access the remote subsystem.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult the SAP documentation or support for specific configurations related to the remote subsystem you are trying to connect to.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: RFC Destinations (Display/Maintain)
  SM21: System Log
  ST22: Dump Analysis
  SICF: HTTP Service Hierarchy (for web services)
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the RLFW000 error or the configuration of RFC destinations.
  
  
  Logs: Review system logs (transaction SM21) and short dumps (transaction ST22) for additional context on the error.
  
  
  By following these steps, you should be able to identify and resolve the cause of the RLFW000 error in your SAP system.