How To Fix REST_CORE_TEXTS021 - No HTTP client set

SAP Error Message - Details

• Message type: E = Error

• Message class: REST_CORE_TEXTS -

• Message number: 021

• Message text: No HTTP client set

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 REST_CORE_TEXTS021 - No HTTP client set ?

  The SAP error message "REST_CORE_TEXTS021 No HTTP client set" typically occurs when there is an issue with the configuration of the HTTP client in the SAP system. This error is often encountered when trying to make HTTP calls using the SAP RESTful programming model or when working with OData services.
  Cause:
  
  Missing HTTP Client Configuration: The HTTP client is not configured in the system, which is required for making outbound HTTP calls.
  Incorrect HTTP Client Settings: The settings for the HTTP client may be incorrect or incomplete.
  Authorization Issues: The user or service account may not have the necessary authorizations to access the HTTP client configuration.
  System Configuration Issues: There may be issues with the overall system configuration that prevent the HTTP client from being recognized.
  
  Solution:
  
  
  Check HTTP Client Configuration:
  
  Go to transaction code SOAMANAGER in the SAP GUI.
  Navigate to the "Web Service Configuration" section.
  Ensure that the HTTP client is properly configured and activated.
  
  
  
  Create or Update HTTP Client:
  
  If no HTTP client exists, create a new one.
  If an HTTP client exists but is not functioning, review its settings and update them as necessary.
  
  
  
  Check Authorizations:
  
  Ensure that the user or service account has the necessary authorizations to access and use the HTTP client.
  You may need to check roles and profiles assigned to the user.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Test the Configuration:
  
  After making changes, test the HTTP client configuration to ensure it is working correctly.
  You can use tools like HTTP Client in transaction SE80 or SE37 to test the HTTP calls.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation for more detailed instructions on configuring HTTP clients and troubleshooting related issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Look for discussions in SAP Community or other forums where similar issues have been addressed.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the steps you have already taken.
  
  By following these steps, you should be able to resolve the "No HTTP client set" error in your SAP system.