How To Fix SCLNT_HTTP418 - No suitable ICM service active (ICM_HTTP_NO_ICM_SERVICE)

SAP Error Message - Details

• Message type: E = Error

• Message class: SCLNT_HTTP - Messages for HTTP Client for Respective Error Code

• Message number: 418

• Message text: No suitable ICM service active (ICM_HTTP_NO_ICM_SERVICE)

What causes this issue?

An outgoing connection was attempted, without having the ICM service
configured.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Even for outgoing connections it is necessary that you configure an ICM
service. If you do not want incoming connections to be allowed,
configure port number 0.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SCLNT_HTTP418 - No suitable ICM service active (ICM_HTTP_NO_ICM_SERVICE) ?

  The SAP error message SCLNT_HTTP418 with the description "No suitable ICM service active (ICM_HTTP_NO_ICM_SERVICE)" indicates that the Internet Communication Manager (ICM) is not configured correctly or is not running for the HTTP service. This can prevent the SAP system from handling HTTP requests properly.
  Causes:
  
  ICM Not Started: The ICM service may not be started in the SAP system.
  Incorrect Configuration: The ICM may not be configured to handle HTTP requests properly.
  Service Not Registered: The HTTP service may not be registered or enabled in the ICM configuration.
  Network Issues: There may be network issues preventing access to the ICM service.
  Port Conflicts: The port configured for the ICM service may be in use by another application or service.
  
  Solutions:
  
  
  Check ICM Status:
  
  Use transaction SMICM to check the status of the ICM. Ensure that it is running.
  If it is not running, you can start it from this transaction.
  
  
  
  Review ICM Configuration:
  
  In transaction RZ10, check the profile parameters related to ICM, such as icm/server_port_0 (for HTTP) and ensure they are correctly set.
  Ensure that the HTTP service is enabled in the ICM configuration.
  
  
  
  Check Service Registration:
  
  In transaction SMICM, navigate to the "Services" tab and ensure that the HTTP service is listed and active.
  
  
  
  Restart ICM:
  
  If changes were made to the configuration, restart the ICM service to apply the changes.
  
  
  
  Check for Port Conflicts:
  
  Ensure that the port configured for the ICM service is not being used by another application. You can use tools like netstat to check for port usage.
  
  
  
  Review Logs:
  
  Check the ICM logs for any errors or warnings that might provide more context on why the service is not available. You can find logs in transaction SM21 or in the ICM log files.
  
  
  
  Network Configuration:
  
  Ensure that there are no firewall rules or network configurations blocking access to the ICM service.
  
  
  
  Related Information:
  
  ICM Documentation: Refer to the SAP Help Portal for detailed documentation on configuring and managing the ICM.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to ICM and HTTP services.
  SAP Community: Engage with the SAP Community for discussions and solutions related to similar issues.
  
  By following these steps, you should be able to diagnose and resolve the SCLNT_HTTP418 error in your SAP system.