How To Fix RLFW209 - ICM MM switched to value &1 with return code &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: RLFW - Messages for runlevel framework

• Message number: 209

• Message text: ICM MM switched to value &1 with return code &2.

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 RLFW209 - ICM MM switched to value &1 with return code &2. ?

  The SAP error message RLFW209 indicates that the Internet Communication Manager (ICM) has switched to a different mode or value due to a specific condition, and it provides a return code that can help diagnose the issue. This message typically relates to the configuration and operation of the ICM in an SAP system, which is responsible for handling HTTP requests and responses.
  Cause:
  The error message RLFW209 can be triggered by various factors, including:
  
  Configuration Issues: Incorrect settings in the ICM configuration can lead to unexpected behavior.
  Resource Limitations: The system may be running out of resources (e.g., memory, CPU) which can cause the ICM to switch modes.
  Network Issues: Problems with network connectivity or DNS resolution can lead to the ICM switching to a different operational mode.
  Load Balancing: If the system is part of a load-balanced environment, issues with the load balancer can cause the ICM to switch modes.
  Timeouts: Long-running requests or timeouts can also trigger this message.
  
  Solution:
  To resolve the RLFW209 error, consider the following steps:
  
  
  Check ICM Configuration:
  
  Review the ICM settings in transaction RZ10 or RZ11 to ensure they are correctly configured.
  Look for parameters related to timeouts, memory limits, and connection handling.
  
  
  
  Monitor System Resources:
  
  Use transaction SM50 or SM66 to monitor the system's performance and check for any resource bottlenecks.
  Ensure that the server has adequate memory and CPU resources available.
  
  
  
  Review Logs:
  
  Check the ICM logs for more detailed error messages. You can find these logs in transaction SMICM under the "Log File" section.
  Look for any preceding error messages that might provide additional context.
  
  
  
  Network Configuration:
  
  Verify network settings, including DNS resolution and firewall rules, to ensure that the ICM can communicate properly with external systems.
  Test connectivity to any external services that the ICM may be trying to reach.
  
  
  
  Load Balancer Settings:
  
  If applicable, check the configuration of any load balancers to ensure they are correctly routing traffic to the SAP system.
  
  
  
  Restart ICM:
  
  If the issue persists, consider restarting the ICM. This can sometimes resolve transient issues.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  ICM Documentation: Review the official SAP documentation on the Internet Communication Manager for more details on its configuration and operation.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the problem persists and you have a support contract, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to diagnose and resolve the RLFW209 error in your SAP system.