How To Fix CL786 - Class & cannot be assigned to class & (recursive)

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 786

• Message text: Class & cannot be assigned to class & (recursive)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CL786 - Class & cannot be assigned to class & (recursive) ?

  The SAP error message CL786 indicates that there is a problem with class assignment in the ABAP Object-Oriented programming environment. Specifically, it means that a class cannot be assigned to another class due to a recursive relationship. This typically occurs when a class is trying to inherit from itself, either directly or indirectly, which is not allowed in object-oriented programming.
  Cause:
  
  Direct Recursion: A class is trying to inherit from itself directly.
  Indirect Recursion: A class inherits from another class, which in turn inherits from the first class, creating a circular reference.
  Incorrect Class Hierarchy: The class hierarchy may have been incorrectly defined, leading to a situation where the inheritance structure is not valid.
  
  Solution:
  
  Check Class Definitions: Review the class definitions involved in the inheritance. Ensure that no class is trying to inherit from itself directly or indirectly.
  Modify Inheritance Structure: If you find a circular reference, you will need to modify the class hierarchy. This may involve:
  
  Changing the superclass of one of the classes.
  Refactoring the class design to eliminate the circular dependency.
  
  
  Use Interfaces: If the design requires shared behavior, consider using interfaces instead of class inheritance to avoid circular dependencies.
  Recompile Classes: After making changes, recompile the classes to ensure that the changes take effect.
  
  Related Information:
  
  Class Hierarchy: Understanding the class hierarchy in ABAP is crucial. Use transaction SE80 or SE11 to visualize the class structure.
  Documentation: Refer to the SAP documentation on Object-Oriented Programming for best practices in class design and inheritance.
  Debugging: If the error persists, use the ABAP debugger to trace the class instantiation and inheritance process to identify where the recursion is occurring.
  
  By addressing the class hierarchy and ensuring that there are no recursive relationships, you should be able to resolve the CL786 error.