How To Fix W_CB107 - Casting error. Application object does not refer to class &1

W_CB107 - Overview

• Message type: E = Error

• Message class: W_CB -

• Message number: 107

• Message text: Casting error. Application object does not refer to class &1

Self-Explanatory Message

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• What is the cause and solution for SAP error message W_CB107 - Casting error. Application object does not refer to class &1 ?

  SAP Error Message:
  W_CB107 Casting error. Application object does not refer to class &1
  
  
  Cause:
  This error occurs when there is an attempt to cast or convert an application object reference to a class type that it does not actually belong to or inherit from. In ABAP Object-Oriented programming, casting is used to treat an object reference as a reference to a more specific class. If the actual object instance is not compatible with the target class, the runtime raises this casting error.
  For example, if you have:
  DATA: ref_obj TYPE REF TO super_class,
        ref_sub TYPE REF TO sub_class.
  
  ref_obj = ref_sub.
  ref_sub = CAST sub_class( ref_obj ). " This will fail if ref_obj is not actually a sub_class instance
  If ref_obj does not point to an instance of sub_class or a subclass thereof, the cast fails with this error.
  
  
  Solution:
  
  
  Check the actual runtime type of the object before casting:
  Use the IS INSTANCE OF