How To Fix /UI5/APP_API147 - Number of app index entries not created because of duplicate id: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI5/APP_API -

• Message number: 147

• Message text: Number of app index entries not created because of duplicate id: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI5/APP_API147 - Number of app index entries not created because of duplicate id: &1 ?

  The SAP error message /UI5/APP_API147 Number of app index entries not created because of duplicate id: &1 typically occurs in the context of SAP Fiori applications and the SAPUI5 framework. This error indicates that there are duplicate IDs in the application index entries, which prevents the system from creating the necessary index entries for the application.
  Cause:
  
  Duplicate IDs: The primary cause of this error is the presence of duplicate IDs in the application manifest or in the application’s metadata. Each application component should have a unique identifier, and if two or more components share the same ID, the system will not be able to create the index entries.
  Incorrect Configuration: Misconfiguration in the application settings or the manifest file can lead to duplicate entries.
  Development Errors: During the development of the application, if the same ID is used for different components (like views, controllers, etc.), it can trigger this error.
  
  Solution:
  
  Identify Duplicate IDs: Review the application’s manifest file and other configuration files to identify any duplicate IDs. Look for entries in the sap.app section, sap.ui5 section, and any other relevant sections.
  Modify IDs: Once duplicates are identified, modify the IDs to ensure that each component has a unique identifier. This may involve renaming views, controllers, or other components.
  Check for Dependencies: If your application depends on other libraries or components, ensure that those do not introduce duplicate IDs as well.
  Rebuild the Application: After making changes, rebuild the application and clear any caches to ensure that the changes take effect.
  Test the Application: After resolving the duplicates, test the application to ensure that it functions correctly and that the error no longer appears.
  
  Related Information:
  
  SAP Fiori Documentation: Refer to the official SAP Fiori and SAPUI5 documentation for best practices on naming conventions and structuring applications.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and to find additional solutions or workarounds.
  Debugging Tools: Use debugging tools available in the SAP Web IDE or Business Application Studio to trace the application and identify where the duplicates are occurring.
  
  By following these steps, you should be able to resolve the error and ensure that your SAP Fiori application runs smoothly without issues related to duplicate IDs.