How To Fix HTTP_CHW_UI_MSG020 - Scheme

SAP Error Message - Details

• Message type: E = Error

• Message class: HTTP_CHW_UI_MSG - strings for output in http alv

• Message number: 020

• Message text: Scheme

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 HTTP_CHW_UI_MSG020 - Scheme ?

  The SAP error message HTTP_CHW_UI_MSG020 typically relates to issues encountered in the SAP system when dealing with HTTP communication, particularly in the context of the SAP Cloud Platform or SAP Fiori applications. This error can arise due to various reasons, including configuration issues, network problems, or issues with the underlying services.
  Cause:
  
  Configuration Issues: Incorrect settings in the SAP Gateway or the backend system can lead to this error. This includes issues with the OData service configuration or the HTTP destination settings.
  Network Problems: Connectivity issues between the client and the server can cause this error. This could be due to firewall settings, proxy configurations, or network outages.
  Service Availability: The OData service or the backend service might be down or not properly activated.
  Authorization Issues: The user might not have the necessary permissions to access the service or resource.
  Browser Issues: Sometimes, browser-related issues, such as caching or cookies, can lead to this error.
  
  Solution:
  
  Check Configuration: Verify the configuration of the OData service in the SAP Gateway. Ensure that the service is properly activated and that the HTTP destination is correctly set up.
  Test Connectivity: Use tools like ping or telnet to check the connectivity between the client and the server. Ensure that there are no firewall or proxy issues blocking the connection.
  Service Status: Check the status of the OData service in the SAP Gateway. You can do this by accessing the SAP Gateway Client (transaction /IWFND/GW_CLIENT) and testing the service.
  Authorization Check: Ensure that the user has the necessary authorizations to access the service. You can check this in the user roles and authorizations in the SAP system.
  Clear Browser Cache: If the issue persists, try clearing the browser cache and cookies or using a different browser to see if that resolves the issue.
  Check Logs: Review the SAP application logs (transaction SLG1) for any additional error messages or details that can provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Refer to the official SAP documentation for guidance on configuring OData services and troubleshooting HTTP communication issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.