How To Fix OO688 - Operation is not supported for category of class/interface &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 688

• Message text: Operation is not supported for category of class/interface &1.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO688 - Operation is not supported for category of class/interface &1. ?

  The SAP error message OO688 ("Operation is not supported for category of class/interface &1") typically occurs when you attempt to perform an operation on a class or interface that is not allowed for its category. This can happen in various scenarios, such as when working with object-oriented programming in ABAP.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  Incorrect Operation: You are trying to perform an operation that is not supported for the specific class or interface. For example, you might be trying to instantiate an abstract class or call a method that is not defined for the class type.
  Class Type Mismatch: The operation you are trying to perform is not applicable to the category of the class/interface you are working with (e.g., trying to use a method that is only available for a certain type of class).
  Accessing Non-Instantiable Classes: Attempting to create an instance of a class that