How To Fix /UI5/APP_API121 - Descriptor embedded in library &1 at path &2 should have Id &3&4 instead

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI5/APP_API -

• Message number: 121

• Message text: Descriptor embedded in library &1 at path &2 should have Id &3&4 instead

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI5/APP_API121 - Descriptor embedded in library &1 at path &2 should have Id &3&4 instead ?

  The SAP error message /UI5/APP_API121 indicates that there is an issue with the descriptor of a UI5 application. Specifically, it suggests that the descriptor embedded in a library at a certain path does not have the expected ID. This can occur in various scenarios, such as when the application is not properly configured or when there are discrepancies in the naming conventions.
  Cause:
  
  Incorrect Descriptor ID: The ID defined in the descriptor file (usually manifest.json) does not match the expected ID format or value.
  Library Version Mismatch: The library version being used may not be compatible with the application, leading to discrepancies in the expected IDs.
  Path Issues: The path specified in the error message may not correctly point to the intended library or descriptor.
  Configuration Errors: There may be errors in the configuration of the application or library that lead to this mismatch.
  
  Solution:
  
  Check the Descriptor File: Open the manifest.json file of your application and verify that the ID is correctly defined. It should match the expected format and value.
  Update Library Versions: Ensure that you are using the correct and compatible versions of the libraries. If necessary, update the libraries to the latest versions.
  Verify Paths: Check the paths specified in your application configuration to ensure they correctly point to the intended libraries and descriptors.
  Clear Cache: Sometimes, cached versions of the application can cause issues. Clear the browser cache or the SAP Fiori cache to ensure that the latest version of the application is being loaded.
  Consult Documentation: Refer to the SAP UI5 documentation for any specific requirements or guidelines regarding the structure and configuration of your application.
  
  Related Information:
  
  SAP UI5 Documentation: Review the official SAP UI5 documentation for best practices on application structure and configuration.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and to find potential solutions.
  Debugging Tools: Use browser developer tools to inspect the network requests and console logs for additional context on the error.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.