How To Fix AXT_MODEL166 - Target ID &1 is already defined for component &2 window &3

SAP Error Message - Details

• Message type: E = Error

• Message class: AXT_MODEL -

• Message number: 166

• Message text: Target ID &1 is already defined for component &2 window &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AXT_MODEL166 - Target ID &1 is already defined for component &2 window &3 ?

  The SAP error message AXT_MODEL166 indicates that there is a conflict in the definition of a target ID within a specific component and window. This typically occurs in the context of SAP's UI modeling, particularly when working with the SAP Fiori elements or SAP UI5 applications.
  Cause:
  The error arises when:
  
  A target ID that you are trying to define for a specific component (like a view or a control) is already in use within the same context (component and window).
  This can happen if there are duplicate definitions in your XML views or if the same target ID is being referenced multiple times in the same component.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check for Duplicates: Review your XML views or the relevant configuration files to ensure that the target ID is not defined more than once. Look for any duplicate entries in the same component and window.
  
  
  Rename Target IDs: If you find that the target ID is indeed duplicated, consider renaming one of the target IDs to ensure that each target ID is unique within the context of the component and window.
  
  
  Review Component Structure: Ensure that the structure of your components is correctly defined and that there are no unintended overlaps in the target IDs.
  
  
  Clear Cache: Sometimes, cached data can cause issues. Clear the cache of your SAP system or the browser cache if you are working with a web application.
  
  
  Check for Inheritance: If you are using inheritance in your components, ensure that the target IDs are not being inherited in a way that causes conflicts.
  
  
  Debugging: If the issue persists, use debugging tools to trace where the target ID is being defined and referenced. This can help you identify the source of the conflict.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on defining target IDs and managing components in SAP UI5 or Fiori applications.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they have found.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to identify and resolve the cause of the AXT_MODEL166 error in your SAP application.