How To Fix CX_MSR_TRC100 - Class &1 must be instantiated using factory class &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CX_MSR_TRC - Message texts in mult-step returns controller

• Message number: 100

• Message text: Class &1 must be instantiated using factory class &2

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 CX_MSR_TRC100 - Class &1 must be instantiated using factory class &2 ?

  The SAP error message CX_MSR_TRC100 Class &1 must be instantiated using factory class &2 typically indicates that there is an issue with the instantiation of a class in the context of the SAP system, particularly in the area of the Model-View-Controller (MVC) architecture or when dealing with certain design patterns.
  Cause:
  
  
  Incorrect Instantiation: The error occurs when a class (denoted as &1) is being instantiated directly, but it is designed to be instantiated only through a specific factory class (denoted as &2). This is a common design pattern in object-oriented programming where a factory class is responsible for creating instances of a class, often to enforce certain constraints or to manage dependencies.
  
  
  Configuration Issues: There may be configuration issues in the application that prevent the factory class from being used correctly.
  
  
  Code Changes: If there have been recent changes to the codebase, it is possible that the instantiation logic was altered, leading to this error.
  
  
  Solution:
  
  
  Use the Factory Class: Ensure that you are using the appropriate factory class (&2) to create instances of the class (&1). Review the documentation or the code to find the correct method to instantiate the class.
  
  
  Check Code for Direct Instantiation: Look through the code where the class is being instantiated and replace any direct instantiation with a call to the factory class.
  
  
  Review Configuration: If applicable, check the configuration settings related to the class and the factory to ensure they are set up correctly.
  
  
  Debugging: If you are unsure where the instantiation is happening, you can use debugging tools to trace the execution and find the point where the error is triggered.
  
  
  Consult Documentation: Refer to the SAP documentation or the specific module documentation for guidance on how to properly instantiate the class using the factory.
  
  
  Related Information:
  
  
  Factory Design Pattern: This is a common design pattern used in software development that provides a way to create objects without specifying the exact class of the object that will be created. Understanding this pattern can help in resolving such issues.
  
  
  SAP Notes and Community: Check SAP Notes for any known issues or patches related to this error. The SAP Community forums can also be a valuable resource for finding solutions from other users who may have encountered the same issue.
  
  
  Code Review: If you are working in a team, consider conducting a code review to ensure that best practices are being followed regarding class instantiation.
  
  
  By following these steps, you should be able to resolve the error and ensure that the class is instantiated correctly using the designated factory class.