How To Fix HTTP_CHW_UI_MSG021 - Host

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 021

• Message text: Host

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message HTTP_CHW_UI_MSG021 - Host ?

  The SAP error message HTTP_CHW_UI_MSG021 typically indicates an issue related to the HTTP connection or the configuration of the SAP system, particularly in the context of the SAP Web Dispatcher or the SAP Gateway. This error can arise due to various reasons, including network issues, incorrect configuration settings, or problems with the backend system.
  Possible Causes:
  
  Network Issues: There may be connectivity problems between the SAP system and the client or between different components of the SAP landscape.
  Configuration Errors: Incorrect settings in the SAP Web Dispatcher or Gateway configuration can lead to this error.
  Backend System Issues: The backend system may be down or not reachable, causing the HTTP request to fail.
  Authorization Issues: The user may not have the necessary permissions to access the requested resource.
  Session Timeout: The session may have expired, leading to a failure in processing the request.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues preventing communication between the client and the SAP system or between different SAP components.
  Review Configuration Settings: Verify the configuration of the SAP Web Dispatcher or Gateway. Ensure that the settings for the backend system, routing, and SSL configurations are correct.
  Check Backend System Status: Ensure that the backend system is up and running. You can do this by trying to access it directly or checking its status in the SAP management console.
  User Authorization: Verify that the user has the necessary authorizations to access the requested resources. Check the roles and permissions assigned to the user.
  Session Management: If the session has timed out, try logging in again or refreshing the session.
  Check Logs: Review the logs for more detailed error messages that can provide additional context about the issue. Look for logs in the SAP Web Dispatcher, Gateway, or the backend system.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to HTTP errors for specific guidance and patches that may address known issues.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found effective.
  Documentation: Refer to the official SAP documentation for the Web Dispatcher and Gateway for detailed configuration and troubleshooting steps.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.