How To Fix OO708 - You cannot move an attribute with a direct type declaration

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 708

• Message text: You cannot move an attribute with a direct type declaration

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO708 - You cannot move an attribute with a direct type declaration ?

  The SAP error message OO708, "You cannot move an attribute with a direct type declaration," typically occurs in the context of ABAP Object-Oriented programming when you attempt to assign or move a value to an attribute that has been declared with a direct type (i.e., a type that is not a reference type).
  Cause:
  This error arises when you try to perform an assignment or move operation on an attribute that is defined with a direct type declaration. In ABAP, direct type declarations are used for value types (like integers, strings, etc.), and they cannot be assigned or moved in the same way as reference types (like objects or structures).
  Example:
  If you have a class with an attribute declared as a direct type, such as:
  CLASS my_class DEFINITION.
    PUBLIC SECTION.
      DATA: my_attribute TYPE i. " Direct type declaration
  ENDCLASS.
  And you try to do something like:
  DATA: my_instance TYPE REF TO my_class,
        my_value TYPE i.
  
  my_instance->my_attribute = my_value. " This will cause OO708 error
  Solution:
  To resolve this error, you need to ensure that you are using the correct syntax for assigning values to attributes. Here are a few approaches:
  
  
  Use a Reference Type: If you need to assign values to an attribute, consider changing the attribute to a reference type (e.g., a reference to a class or a structure).
  DATA: my_attribute TYPE REF TO my_type. " Change to reference type
  
  
  Direct Assignment: If the attribute is a direct type and you want to assign a value, ensure that you are doing it in the correct context. For example, you can assign values directly to the attribute of an instance of the class:
  CREATE OBJECT my_instance.
  my_instance->my_attribute = my_value. " This is correct if my_attribute is direct type
  
  
  Use a Method: If you need to encapsulate the assignment logic, consider creating a method in your class that handles the assignment.
  METHOD set_my_attribute.
    my_attribute = value.
  ENDMETHOD.
  
  
  Related Information:
  
  Direct Type vs. Reference Type: Understanding the difference between direct types (value types) and reference types in ABAP is crucial. Direct types hold the actual data, while reference types hold a reference to the data.
  ABAP Documentation: Refer to the official SAP documentation for more details on data types and object-oriented programming in ABAP.
  Debugging: If you encounter this error, check the type declarations of your attributes and ensure that you are using the correct assignment syntax.
  
  By following these guidelines, you should be able to resolve the OO708 error and correctly manage attribute assignments in your ABAP programs.