How To Fix /IWNGW/CM_HUB149 - HTTP Client could not be created for Destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 149

• Message text: HTTP Client could not be created for Destination &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 /IWNGW/CM_HUB149 - HTTP Client could not be created for Destination &1 ?

  The SAP error message /IWNGW/CM_HUB149 HTTP Client could not be created for Destination &1 typically indicates that there is an issue with the HTTP destination configuration in the SAP system. This error can occur in various scenarios, particularly when trying to connect to external services or APIs using the HTTP client.
  Causes:
  
  Incorrect Destination Configuration: The HTTP destination specified (denoted by &1 in the error message) may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the specified destination.
  Authorization Issues: The user or service account may not have the necessary authorizations to access the destination.
  Missing or Incorrect SSL Configuration: If the destination uses HTTPS, there may be issues with SSL certificates or configurations.
  Service Unavailability: The external service or API that the destination points to may be down or unreachable.
  
  Solutions:
  
  
  Check Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Locate the HTTP destination that corresponds to &1.
  Verify that the configuration settings (such as the target host, port, and path) are correct.
  
  
  
  Test Connection:
  
  In transaction SM59, select the destination and use the "Connection Test" option to check if the connection can be established successfully.
  
  
  
  Review Network Settings:
  
  Ensure that there are no firewall rules or network policies blocking access to the destination.
  Check if the SAP system can reach the destination using tools like ping or telnet.
  
  
  
  Check Authorizations:
  
  Ensure that the user or service account used for the connection has the necessary authorizations to access the destination.
  
  
  
  SSL Configuration:
  
  If using HTTPS, ensure that the SSL certificates are correctly installed and trusted by the SAP system.
  Check the SSL settings in transaction STRUST to ensure that the necessary certificates are present.
  
  
  
  Check External Service:
  
  Verify that the external service or API is up and running. You can do this by trying to access it from a web browser or using tools like Postman.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SM59: To manage and test RFC destinations.
  STRUST: To manage SSL certificates.
  
  
  Logs and Traces:
  
  Check the application logs (transaction SLG1) for more detailed error messages that may provide additional context.
  Use transaction ST22 to check for any dumps that may have occurred related to this error.
  
  
  
  By following these steps, you should be able to identify and resolve the issue causing the /IWNGW/CM_HUB149 error message in your SAP system.