How To Fix CM_WEB_MESSAGE_ERROR109 - ICM: Invalid Request Line

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_WEB_MESSAGE_ERROR - Message Class for CX_WEB_MESSAGE_ERROR

• Message number: 109

• Message text: ICM: Invalid Request Line

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CM_WEB_MESSAGE_ERROR109 - ICM: Invalid Request Line ?

  The SAP error message CM_WEB_MESSAGE_ERROR109: ICM: Invalid Request Line typically occurs in the Internet Communication Manager (ICM) when there is an issue with the HTTP request being sent to the SAP system. This error indicates that the request line of the HTTP request is malformed or not recognized by the ICM.
  Causes:
  
  Malformed HTTP Request: The request line (which includes the method, URI, and HTTP version) may not conform to the HTTP protocol standards.
  Incorrect URL: The URL being accessed may be incorrect or improperly formatted.
  Proxy Issues: If a proxy server is being used, it may be altering the request in a way that makes it invalid.
  Client-Side Issues: The client application or browser may be sending an invalid request due to misconfiguration or bugs.
  Network Issues: Network devices (like firewalls or load balancers) may be modifying the request in an unintended way.
  
  Solutions:
  
  Check the Request Format: Ensure that the HTTP request being sent is correctly formatted. This includes checking the method (GET, POST, etc.), the URI, and the HTTP version.
  Validate the URL: Make sure that the URL being accessed is correct and does not contain any illegal characters or formatting issues.
  Review Proxy Settings: If a proxy is being used, check its configuration to ensure it is not altering the request inappropriately.
  Test with Different Clients: Try accessing the SAP system using different browsers or tools (like Postman or curl) to see if the issue persists.
  Check ICM Logs: Review the ICM logs for more detailed error messages that can provide additional context about the issue.
  Network Configuration: Ensure that any network devices (firewalls, load balancers) are configured correctly and are not interfering with the HTTP requests.
  
  Related Information:
  
  ICM Configuration: Familiarize yourself with the ICM settings in the SAP system, which can be found in transaction RZ10 or RZ11.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches.
  HTTP Protocol Standards: Understanding the HTTP protocol can help in diagnosing issues related to malformed requests.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance, providing them with detailed logs and information about the issue.