How To Fix HTTP_CHW_MSG020 - Scheme

SAP Error Message - Details

• Message type: E = Error

• Message class: HTTP_CHW_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_MSG020 - Scheme ?

  The SAP error message HTTP_CHW_MSG020 typically relates to issues with the HTTP connection or configuration in the SAP system, particularly when dealing with the SAP Cloud Connector or when integrating with external services. The error message may indicate a problem with the communication channel or the configuration of the HTTP destination.
  Cause:
  
  Configuration Issues: The HTTP destination may not be configured correctly in the SAP system.
  Network Issues: There may be network connectivity problems between the SAP system and the target service.
  Authentication Problems: If the target service requires authentication, incorrect credentials or missing authentication details can lead to this error.
  SSL/TLS Issues: If the connection is secured using SSL/TLS, there may be issues with the certificates or the SSL configuration.
  Service Unavailability: The target service may be down or unreachable.
  
  Solution:
  
  
  Check HTTP Destination Configuration:
  
  Go to transaction SM59 in the SAP GUI.
  Verify the configuration of the HTTP destination. Ensure that the URL, authentication method, and other settings are correct.
  
  
  
  Test Connection:
  
  Use the "Connection Test" feature in SM59 to check if the connection to the target service is successful.
  
  
  
  Review Network Settings:
  
  Ensure that there are no firewall or network issues preventing access to the target service.
  Check if the service is reachable from the SAP server using tools like ping or telnet.
  
  
  
  Check Authentication:
  
  If the service requires authentication, ensure that the correct credentials are provided in the HTTP destination settings.
  If using OAuth or other token-based authentication, ensure that the tokens are valid and not expired.
  
  
  
  SSL/TLS Configuration:
  
  If using HTTPS, ensure that the SSL certificates are correctly installed and trusted by the SAP system.
  Check the SSL settings in transaction STRUST to ensure that the necessary certificates are imported.
  
  
  
  Service Availability:
  
  Verify that the target service is up and running. You can do this by accessing the service URL directly in a web browser or using tools like curl.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to HTTP connections or the error message in question.
  Logs: Review the application logs (transaction SLG1) for more detailed error messages that may provide additional context.
  Documentation: Refer to the official SAP documentation for configuring HTTP connections and troubleshooting common issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.