How To Fix FES003 - Wrong frontend or error at frontend

SAP Error Message - Details

• Message type: E = Error

• Message class: FES - Messages for the Function Group SFES

• Message number: 003

• Message text: Wrong frontend or error at frontend

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 FES003 - Wrong frontend or error at frontend ?

  The SAP error message FES003: Wrong frontend or error at frontend typically indicates an issue with the SAP GUI (Graphical User Interface) or the connection between the frontend client and the SAP backend system. This error can arise due to various reasons, including configuration issues, network problems, or compatibility issues between the SAP GUI and the backend system.
  Causes:
  
  Incompatible SAP GUI Version: The version of the SAP GUI installed on the client machine may not be compatible with the version of the SAP backend system.
  Network Issues: There may be network connectivity problems preventing the frontend from communicating with the backend.
  Configuration Errors: Incorrect settings in the SAP GUI configuration or in the SAP system settings can lead to this error.
  Corrupted Installation: The SAP GUI installation on the client machine may be corrupted or incomplete.
  Browser Issues: If you are using a web-based SAP interface (like SAP Fiori), browser compatibility issues can also trigger this error.
  
  Solutions:
  
  Check SAP GUI Version: Ensure that the SAP GUI version is compatible with the backend system. If necessary, update the SAP GUI to the latest version.
  Network Connectivity: Verify that the client machine has a stable network connection to the SAP server. Check for any firewall or proxy settings that might be blocking the connection.
  Reconfigure SAP GUI: Review the SAP GUI configuration settings. Ensure that the connection parameters (like the application server, instance number, and system ID) are correctly set.
  Reinstall SAP GUI: If the installation is suspected to be corrupted, uninstall and then reinstall the SAP GUI.
  Browser Compatibility: If using a web-based interface, ensure that the browser is supported by the SAP application. Try using a different browser or updating the current one.
  Check SAP Notes: Look for any relevant SAP Notes or patches that might address known issues related to this error.
  
  Related Information:
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  Documentation: Review the official SAP documentation for troubleshooting steps related to SAP GUI and frontend/backend connectivity issues.
  
  By following these steps, you should be able to diagnose and resolve the FES003 error effectively.