How To Fix OO255 - Attribute &1 &2: Typing category not suitable for object reference

OO255 - Overview

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 255

• Message text: Attribute &1 &2: Typing category not suitable for object reference

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

OO255 - Details

• The SAP error message OO255, which states "Attribute &1 &2: Typing category not suitable for object reference," typically occurs in the context of ABAP Object-Oriented programming. This error indicates that there is a mismatch between the expected data type of an attribute and the actual data type being used.
  
  Cause:
  The error is usually caused by one of the following issues:
  
  Incorrect Data Type: The attribute is defined with a data type that is not compatible with the object reference being assigned to it. For example, if an attribute is defined as a value type (like a primitive data type) but is being assigned an object reference.
  Inheritance Issues: If the attribute is defined in a superclass and the subclass is trying to use it incorrectly, this can lead to typing issues.
  Interface Implementation: If an attribute is expected to implement an interface but does not, this can also trigger the error.
  
  
  Solution:
  To resolve the OO255