How To Fix ESH_FL_MSG186 - Reading of HTTP Connection failed

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_FL_MSG - File Processing

• Message number: 186

• Message text: Reading of HTTP Connection failed

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_FL_MSG186 - Reading of HTTP Connection failed ?

  The SAP error message ESH_FL_MSG186 ("Reading of HTTP Connection failed") typically indicates that there is an issue with the HTTP connection when trying to access a service or resource in the SAP system. This error can occur in various contexts, such as when using the Enterprise Search (ESH) functionality or when connecting to external services.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the external service or resource.
  Incorrect URL: The URL configured for the HTTP connection may be incorrect or malformed.
  Service Unavailability: The external service you are trying to reach may be down or not responding.
  Firewall/Proxy Issues: Firewalls or proxy settings may be blocking the HTTP request.
  Authentication Issues: If the external service requires authentication, incorrect credentials or missing authentication tokens can lead to connection failures.
  SSL/TLS Issues: If the connection is secured (HTTPS), there may be issues with SSL certificates or TLS settings.
  
  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.
  Verify URL: Double-check the URL configured in the SAP system for the HTTP connection. Make sure it is correct and accessible.
  Service Status: Check if the external service is up and running. You can try accessing the service directly through a web browser or a tool like Postman.
  Firewall/Proxy Configuration: Review firewall and proxy settings to ensure that they allow traffic to and from the external service.
  Authentication: If the service requires authentication, verify that the credentials are correct and that they are being sent properly in the request.
  SSL/TLS Configuration: If using HTTPS, ensure that the SSL certificates are valid and properly configured in the SAP system. You may need to import the certificate into the SAP trust store.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches or updates.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SMICM to monitor HTTP connections and SICF to manage HTTP services in SAP.
  Logs: Check the application logs (transaction SLG1) for more detailed error messages that can provide additional context.
  SAP Community: Consider searching or posting in the 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 with your SAP Basis team or SAP support for further assistance.