How To Fix /IWNGW/CM_HUB035 - Could not create HTTP client

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 035

• Message text: Could not create HTTP client

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWNGW/CM_HUB035 - Could not create HTTP client ?

  The SAP error message /IWNGW/CM_HUB035 Could not create HTTP client typically indicates an issue with the HTTP client configuration or connectivity in the SAP system, particularly when trying to communicate with external services or APIs. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the external service.
  Configuration Errors: The HTTP client configuration in the SAP system may be incorrect or incomplete.
  Authorization Issues: The user or service account may not have the necessary permissions to create an HTTP client.
  Missing HTTP Client Libraries: Required libraries or components for HTTP communication may not be installed or configured properly.
  Proxy Settings: If a proxy is required for outbound HTTP calls, it may not be configured correctly.
  SSL/TLS Issues: Problems with SSL certificates or TLS settings can prevent the HTTP client from being created.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the external service. You can use tools like ping or telnet to test connectivity.
  Review HTTP Client Configuration: Go to transaction SOAMANAGER and check the configuration of the HTTP client. Ensure that all required parameters are set correctly.
  Check Authorizations: Verify that the user or service account has the necessary authorizations to create and use HTTP clients.
  Install Required Libraries: Ensure that all necessary HTTP client libraries are installed and properly configured in the SAP system.
  Configure Proxy Settings: If a proxy is needed, configure it in the SAP system using transaction SM59 for RFC destinations or in SOAMANAGER for web service configurations.
  SSL/TLS Configuration: Check the SSL certificates and ensure that they are valid and properly installed. You can use transaction STRUST to manage SSL certificates.
  Check System Logs: Review the system logs (transaction SM21) and the HTTP trace (transaction SICF) for more detailed error messages that can provide additional context.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for HTTP client configuration and troubleshooting.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.