How To Fix ESH_SEARCH134 - Sending to HTTP client: HTTP communication unsuccessful

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_SEARCH - ESH Search

• Message number: 134

• Message text: Sending to HTTP client: HTTP communication unsuccessful

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 ESH_SEARCH134 - Sending to HTTP client: HTTP communication unsuccessful ?

  The SAP error message ESH_SEARCH134 indicates that there was an issue with HTTP communication when trying to send data to an HTTP client. This error can occur in various scenarios, particularly when using the SAP Enterprise Search (ESH) or when integrating with external systems via HTTP.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the HTTP client.
  Incorrect URL: The URL configured for the HTTP client may be incorrect or unreachable.
  Firewall Restrictions: Firewalls or security settings may be blocking the HTTP requests.
  HTTP Client Configuration: The HTTP client may not be properly configured or may not be running.
  Timeouts: The request may be timing out due to slow response times from the HTTP client.
  Authentication Issues: If the HTTP client requires authentication, incorrect credentials may lead to communication failure.
  SAP System Configuration: There may be misconfigurations in the SAP system settings related to HTTP communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the HTTP client. You can use tools like ping or telnet to test connectivity.
  Verify URL: Double-check the URL configured in the SAP system for the HTTP client. Make sure it is correct and accessible.
  Review Firewall Settings: Ensure that firewalls are not blocking the HTTP requests. You may need to work with your network team to allow traffic on the required ports.
  Check HTTP Client Status: Ensure that the HTTP client is up and running. If it is a web service, check its availability.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the SAP system or the HTTP client.
  Validate Authentication: If the HTTP client requires authentication, ensure that the correct credentials are being used and that they have the necessary permissions.
  Review SAP Configuration: Check the SAP system configuration for any settings related to HTTP communication. This includes checking transaction codes like SMICM (ICM Monitor) for any errors or logs.
  Check Logs: Review the application logs in SAP (transaction SLG1) for more detailed error messages that can provide additional context.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to ESH and HTTP communication for any known issues or patches.
  Documentation: Refer to the official SAP documentation for configuring HTTP communication and troubleshooting related issues.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have faced similar issues.
  
  By following these steps, you should be able to diagnose and resolve the ESH_SEARCH134 error effectively.