How To Fix OO402 - The class was not modified

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 402

• Message text: The class was not modified

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 OO402 - The class was not modified ?

  The SAP error message OO402, "The class was not modified," typically occurs when you attempt to save a class in the ABAP Workbench (SE80 or SE24) without making any changes to it. This message indicates that the system has detected no modifications to the class definition or implementation, and therefore, it does not need to be saved.
  Cause:
  
  No Changes Made: The most common cause of this error is that you are trying to save a class after opening it but without making any actual changes to its attributes, methods, or documentation.
  Unintentional Save Attempt: Sometimes, users may inadvertently try to save a class after reviewing it or after making changes that were not saved (e.g., forgetting to modify anything).
  
  Solution:
  
  Make Actual Changes: To resolve this error, ensure that you make some modifications to the class. This could be adding a new method, changing an existing method, or updating the class documentation.
  Check for Unsaved Changes: If you believe you have made changes, double-check to ensure that they are saved. Sometimes, changes may not be saved due to various reasons (e.g., session timeouts, errors during the save process).
  Ignore the Message: If you are simply trying to save the class to check something and have not made any changes, you can ignore this message. It is not an error that requires fixing; it is just an informational message indicating that there is nothing new to save.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to class management, such as SE24 (Class Builder) and SE80 (Object Navigator).
  Development Guidelines: When working with classes in ABAP, it is good practice to document changes and ensure that you are saving only when necessary.
  Version Control: If you are using version control or transport requests, ensure that you are following the correct procedures for saving and transporting changes.
  
  If you continue to encounter issues or if the error seems to be related to a different context, consider checking the SAP Notes or reaching out to your SAP support team for further assistance.