How To Fix CL744 - Assignment of class "&" to class "&" created

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 744

• Message text: Assignment of class "&" to class "&" created

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL744 - Assignment of class "&" to class "&" created ?

  The SAP error message CL744 indicates that there is an issue with the assignment of one class to another in the ABAP Object-Oriented programming environment. Specifically, it means that you are trying to assign a class to another class that is not compatible, typically because the class you are trying to assign does not inherit from the class you are assigning it to, or there is a mismatch in the class hierarchy.
  Cause:
  
  Incompatible Class Hierarchy: The class you are trying to assign does not extend or implement the required interfaces of the target class.
  Incorrect Class Definition: The class definitions may not be properly set up, leading to a mismatch in expected inheritance.
  Visibility Issues: The visibility of the classes (public, protected, private) may prevent proper assignment.
  Abstract Classes: If you are trying to assign an abstract class to a concrete class, it may lead to this error.
  
  Solution:
  
  Check Class Hierarchy: Ensure that the class you are trying to assign is a subclass of the target class. You can do this by checking the class definitions in the Class Builder (transaction SE24).
  Review Class Definitions: Make sure that the class definitions are correct and that the inheritance structure is properly defined.
  Adjust Visibility: If the classes are not visible to each other due to access modifiers, adjust the visibility accordingly.
  Implement Required Interfaces: If the target class requires certain interfaces to be implemented, ensure that the class you are trying to assign implements those interfaces.
  Use the Correct Class Type: Ensure that you are using the correct type of class (abstract vs. concrete) as per your design requirements.
  
  Related Information:
  
  Transaction Codes: Use transaction SE24 (Class Builder) to view and modify class definitions.
  Documentation: Refer to the SAP Help Portal for detailed documentation on Object-Oriented programming in ABAP.
  Debugging: If you are unsure about the class hierarchy, you can use the debugger to trace the class instantiation and see where the error occurs.
  
  By following these steps, you should be able to resolve the CL744 error and ensure that your class assignments are valid within the SAP system.