/IBX/UIF018 - Constructor of model class &1 is PRIVATE

SAP Error Message - Details

• Message type: E = Error

• Message class: /IBX/UIF -

• Message number: 018

• Message text: Constructor of model class &1 is PRIVATE

Self-Explanatory Message

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AnswerBot

• What is the cause and solution for SAP error message /IBX/UIF018 - Constructor of model class &1 is PRIVATE ?

  The SAP error message /IBX/UIF018 Constructor of model class &1 is PRIVATE typically indicates that there is an issue with the accessibility of the constructor in a model class that is being used in the context of the SAP UI Framework (UI5 or Fiori). This error arises when the framework attempts to instantiate a model class, but the constructor of that class is declared as private, preventing the instantiation.
  Cause:
  
  Private Constructor: The model class has a constructor that is declared as private, which means it cannot be instantiated outside of its own class.
  Incorrect Class Usage: The class might be intended to be used as a singleton or might be designed to be instantiated in a specific way that does not align with how it is being called.
  Misconfiguration: There could be a misconfiguration in the way the model is being defined or used in the application.
  
  Solution:
  
  
  Change Constructor Visibility: If you have access to the model class code, change the constructor from private to public or protected, depending on your design requirements. This will allow the framework to instantiate the class.
  // Example of changing constructor visibility
  class MyModel {
      constructor() {
          // constructor logic
      }
  }
  
  
  Use Factory Method: If the class is designed to be a singleton, consider implementing a factory method that provides access to the instance of the class instead of directly instantiating it.
  class MyModel {
      static getInstance() {
          if (!MyModel.instance) {
              MyModel.instance = new MyModel();
          }
          return MyModel.instance;
      }
  }
  
  
  Check Configuration: Review the configuration where the model is being instantiated. Ensure that you are using the correct class and that it is intended to be used in the way you are trying to use it.
  
  
  Consult Documentation: If you are using a third-party library or a specific SAP component, consult the relevant documentation to ensure that you are following the intended usage patterns.
  
  
  Related Information:
  
  SAP UI5 Documentation: Review the official SAP UI5 documentation for best practices on model creation and usage.
  Debugging: Use debugging tools to trace where the instantiation is failing and ensure that the correct class is being referenced.
  Community Forums: If the issue persists, consider reaching out to SAP community forums or support channels for additional assistance.
  
  By addressing the constructor visibility and ensuring proper usage of the model class, you should be able to resolve the error message /IBX/UIF018.