How To Fix COM_IL_UI001 - Constructor: Unable to call super constructor

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_IL_UI - Messages for Interlinkage Interface

• Message number: 001

• Message text: Constructor: Unable to call super constructor

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_IL_UI001 - Constructor: Unable to call super constructor ?

  The SAP error message COM_IL_UI001: Constructor: Unable to call super constructor typically occurs in the context of SAP UI5 or Fiori applications. This error indicates that there is an issue with the inheritance of a class, specifically when trying to call the constructor of a parent class (superclass) from a child class (subclass).
  Causes:
  
  Incorrect Class Definition: The subclass may not be correctly defined, or the superclass may not be properly initialized.
  Missing Dependencies: The superclass might not be loaded or available in the current context, leading to the inability to call its constructor.
  Incorrect Namespace: The namespace or path to the superclass might be incorrect, causing the system to fail to locate it.
  JavaScript Errors: There may be syntax errors or other JavaScript-related issues in the code that prevent the constructor from being called.
  Version Mismatch: If there are version mismatches between libraries or components, it may lead to issues in class inheritance.
  
  Solutions:
  
  
  Check Class Definitions: Ensure that the subclass is correctly defined and that the superclass is properly initialized. Verify that the extend method is used correctly.
  sap.ui.define([
      "sap/ui/core/mvc/Controller"
  ], function(Controller) {
      "use strict";
      return Controller.extend("my.namespace.MyController", {
          constructor: function() {
              // Call the superclass constructor
              Controller.apply(this, arguments);
          }
      });
  });
  
  
  Verify Dependencies: Make sure that all required libraries and modules are loaded before the subclass is instantiated. Use the sap.ui.require or sap.ui.define methods to manage dependencies properly.
  
  
  Check Namespace and Paths: Ensure that the namespace and paths to the superclass are correct. This includes checking the module name and ensuring it matches the file structure.
  
  
  Debug JavaScript Errors: Use the browser's developer tools to check for any JavaScript errors that may be occurring before the constructor is called. Fix any syntax or runtime errors.
  
  
  Update Libraries: If you suspect a version mismatch, ensure that you are using compatible versions of SAP UI5 libraries. Check the SAP documentation for any updates or changes in the API.
  
  
  Clear Cache: Sometimes, browser caching can cause issues. Clear the browser cache or try accessing the application in incognito mode.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP UI5 documentation for guidelines on class inheritance and module loading.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and to find potential solutions.
  Debugging Tools: Utilize debugging tools available in browsers (like Chrome DevTools) to step through the code and identify where the error occurs.
  
  By following these steps, you should be able to diagnose and resolve the COM_IL_UI001 error in your SAP UI5 or Fiori application.