How To Fix /IBX/UIF012 - Constructor of controller class &1 is PROTECTED

SAP Error Message - Details

• Message type: E = Error

• Message class: /IBX/UIF -

• Message number: 012

• Message text: Constructor of controller class &1 is PROTECTED

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IBX/UIF012 - Constructor of controller class &1 is PROTECTED ?

  The SAP error message /IBX/UIF012 Constructor of controller class &1 is PROTECTED typically indicates that there is an issue with the accessibility of the constructor in a controller class that is being used in your application. This error arises when the constructor of the specified controller class is declared as PROTECTED, which means it cannot be instantiated directly outside of its own class or its subclasses.
  Cause:
  
  Protected Constructor: The controller class you are trying to instantiate has a constructor that is marked as PROTECTED. This restricts the instantiation of the class to within the class itself or its subclasses.
  Incorrect Usage: The application or framework is attempting to create an instance of this controller class in a way that is not allowed due to the access modifier.
  
  Solution:
  
  Check the Controller Class: Review the implementation of the controller class specified in the error message. Look for the constructor and check its access modifier.
  Change Access Modifier: If you have control over the class, consider changing the constructor's access modifier from PROTECTED to PUBLIC if it makes sense for your application design. This will allow the class to be instantiated from outside.
  Use Subclassing: If you cannot change the access modifier, consider creating a subclass of the controller class. You can then instantiate the subclass, which can call the protected constructor of the parent class.
  Review Application Logic: Ensure that the logic in your application is correctly designed to work with the intended access levels of the classes. If the class is meant to be used in a specific way, follow that design pattern.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP documentation for the specific framework or library you are using to understand the intended usage of the controller classes.
  Best Practices: Familiarize yourself with best practices for class design in ABAP or the specific programming language you are using within the SAP environment.
  Debugging: Use debugging tools to trace where the instantiation is happening and ensure that it aligns with the intended design of the application.
  
  By addressing the access modifier issue and ensuring that your application logic aligns with the intended use of the controller class, you should be able to resolve the error.