How To Fix KB126 - The column width is set to the maximum output length

SAP Error Message - Details

• Message type: E = Error

• Message class: KB - Controlling: Reporting

• Message number: 126

• Message text: The column width is set to the maximum output length

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KB126 - The column width is set to the maximum output length ?

  The SAP error message KB126, which states "The column width is set to the maximum output length," typically occurs when the output of a report or transaction exceeds the defined column width in the SAP system. This can happen in various contexts, such as when generating reports, displaying data in ALV grids, or exporting data to external formats.
  Cause:
  
  Data Length Exceeds Column Width: The data being displayed or exported has a length that exceeds the maximum width defined for the column in the report or output format.
  Configuration Issues: The settings for the report or output format may not be configured to accommodate the length of the data being processed.
  Field Definitions: The field definitions in the database or data structure may not match the expected output length.
  
  Solution:
  
  
  Adjust Column Width:
  
  If you have access to the report or output configuration, try to increase the column width to accommodate the data length.
  In ALV reports, you can often adjust the column width by dragging the column borders or using the layout settings.
  
  
  
  Modify Data Output:
  
  If possible, truncate or format the data to fit within the defined column width. This may involve changing the way data is displayed or exported.
  
  
  
  Check Field Definitions:
  
  Review the field definitions in the underlying data structure to ensure they are correctly defined and match the expected output length.
  
  
  
  Use Alternative Output Formats:
  
  If the issue persists, consider using a different output format that may handle longer data strings better, such as exporting to Excel or CSV.
  
  
  
  Consult Documentation or Support:
  
  If you are unable to resolve the issue, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling column width issues.
  User Forums: SAP Community and other user forums can be valuable resources for finding solutions to similar issues encountered by other users.
  Transaction Codes: Familiarize yourself with transaction codes related to report configuration and output settings, such as SE38 (ABAP Editor) or SE80 (Object Navigator).
  
  By following these steps, you should be able to address the KB126 error and ensure that your reports and outputs are displayed correctly.