How To Fix OO257 - Attribute &1 &2: Incorrect typing category: Reference obj. not embeddable

OO257 - Overview

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 257

• Message text: Attribute &1 &2: Incorrect typing category: Reference obj. not embeddable

Self-Explanatory Message

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OO257 - Details

• The SAP error message OO257, which states "Attribute &1 &2: Incorrect typing category: Reference obj. not embeddable," typically occurs in the context of ABAP Object-Oriented programming. This error indicates that there is an issue with the definition of an attribute in a class or interface, specifically related to the type of the attribute being defined.
  
  Cause:
  The error is caused by attempting to define an attribute of a class or interface with a reference type that is not embeddable. In ABAP, certain types of reference objects (like classes) cannot be embedded directly into other classes or structures. This usually happens when:
  
  You are trying to define an attribute of a reference type (like a class reference) in a way that is not allowed.
  The reference type is not compatible with the expected type for the attribute.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Attribute Definition: Review the definition of the attribute