How To Fix CNHT003 - Unknown error occurred at method call of the SAP HTML control

SAP Error Message - Details

• Message type: E = Error

• Message class: CNHT - Messages for SAP HTML control

• Message number: 003

• Message text: Unknown error occurred at method call of the SAP HTML control

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 CNHT003 - Unknown error occurred at method call of the SAP HTML control ?

  The SAP error message CNHT003 ("Unknown error occurred at method call of the SAP HTML control") typically indicates an issue with the SAP GUI for HTML or the underlying web application. This error can arise from various causes, including configuration issues, network problems, or browser compatibility issues.
  Possible Causes:
  
  Browser Compatibility: The SAP HTML control may not be compatible with the browser you are using. Some versions of SAP GUI for HTML have specific browser requirements.
  Network Issues: Connectivity problems between the client and the SAP server can lead to this error.
  Session Timeout: If the session has timed out, it may result in this error when trying to perform an action.
  SAP GUI Version: An outdated version of the SAP GUI or HTML control may cause compatibility issues.
  JavaScript Errors: If there are JavaScript errors in the HTML control, it may lead to this error message.
  Configuration Issues: Incorrect configuration settings in the SAP system or the web server can also lead to this error.
  
  Solutions:
  
  Check Browser Compatibility: Ensure that you are using a supported browser version for the SAP HTML control. Refer to SAP documentation for the list of supported browsers.
  Clear Browser Cache: Clear the cache and cookies of your browser to eliminate any corrupted data that might be causing the issue.
  Check Network Connection: Verify that your network connection is stable and that there are no firewall or proxy settings blocking access to the SAP server.
  Update SAP GUI: Ensure that you are using the latest version of the SAP GUI. If not, consider updating it to the latest version.
  Session Management: If you suspect a session timeout, try logging out and logging back into the SAP system.
  Review JavaScript Console: Open the browser's developer tools (usually F12) and check the console for any JavaScript errors that may provide more context about the issue.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.
  
  Related Information:
  
  SAP Notes: Search for specific SAP Notes related to the CNHT003 error for any known issues and fixes.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Documentation: Review the official SAP documentation for the HTML control and any related components for configuration guidelines and troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the CNHT003 error.