How To Fix /PM0/AB_AT126 - A check method already exists for class &1 method &2

/PM0/AB_AT126 - Overview

• Message type: E = Error

• Message class: /PM0/AB_AT -

• Message number: 126

• Message text: A check method already exists for class &1 method &2

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/AB_AT126 - A check method already exists for class &1 method &2 ?

  The SAP error message /PM0/AB_AT126 A check method already exists for class &1 method &2 typically indicates that there is an attempt to create or define a check method in a class where a method with the same name already exists. This is a common issue when working with ABAP classes and methods, particularly in the context of implementing checks or validations.
  
  Cause:
  
  Duplicate Method Definition: The error arises when you try to define a check method that has the same name as an existing method in the specified class.
  Inheritance Issues: If the class is inheriting from a parent class that already has a method with the same name, this can also lead to this error.
  Namespace Conflicts: If you are working in a system with multiple developers, it’s possible that another developer has already created a method with the same name in the same class.
  
  
  Solution:
  
  Check Existing Methods: Review the class definition to