How To Fix KWUI026 - Internal overflow; restart the application

SAP Error Message - Details

• Message type: E = Error

• Message class: KWUI - Messages for KW UI Controls and Dialogs

• Message number: 026

• Message text: Internal overflow; restart the application

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 KWUI026 - Internal overflow; restart the application ?

  The SAP error message KWUI026, which states "Internal overflow; restart the application," typically indicates that there is an internal processing issue within the SAP system. This error can occur due to various reasons, including:
  Causes:
  
  Memory Limitations: The application may be trying to process more data than the allocated memory can handle, leading to an overflow.
  Data Volume: Large datasets or complex calculations can exceed the system's processing capabilities.
  Configuration Issues: Incorrect settings in the SAP system or application configuration can lead to unexpected behavior.
  Software Bugs: There may be bugs in the SAP application or the underlying code that cause the overflow.
  Database Issues: Problems with the database, such as corruption or misconfiguration, can also lead to this error.
  
  Solutions:
  
  Restart the Application: As the error message suggests, restarting the application can sometimes resolve temporary issues.
  Check System Resources: Monitor the system's memory and CPU usage. If resources are low, consider increasing them or optimizing the application.
  Reduce Data Volume: If possible, try to limit the amount of data being processed at one time. This can involve filtering data or breaking down large transactions into smaller ones.
  Review Configuration: Check the configuration settings of the application and ensure they are set correctly. Consult SAP documentation for recommended settings.
  Update Software: Ensure that your SAP system is up to date with the latest patches and updates, as these may contain fixes for known issues.
  Check Logs: Review the application and system logs for any additional error messages or warnings that could provide more context about the overflow.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They may have specific insights or solutions based on the version of SAP you are using.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that address the KWUI026 error. These notes may provide specific fixes or workarounds.
  System Monitoring Tools: Utilize SAP's monitoring tools (like ST22 for dumps, SM21 for system logs) to gather more information about the error.
  Performance Tuning: Consider performance tuning of the application and database to handle larger volumes of data more efficiently.
  
  By following these steps, you should be able to diagnose and potentially resolve the KWUI026 error in your SAP environment.