CLUNDO023 - Change number &: undo at class level not allowed for &

SAP Error Message - Details

• Message type: E = Error

• Message class: CLUNDO - Message Class for Undo Functions in Classification

• Message number: 023

• Message text: Change number &: undo at class level not allowed for &

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.

AnswerBot

• What is the cause and solution for SAP error message CLUNDO023 - Change number &: undo at class level not allowed for & ?

  The SAP error message CLUNDO023 indicates that an attempt was made to undo a change at the class level for a specific change number, but this operation is not permitted. This error typically arises in the context of change management within SAP, particularly when dealing with transport requests or change numbers associated with class-based objects.
  Cause:
  
  Change Number Restrictions: The change number you are trying to undo may have restrictions that prevent undoing changes at the class level. This can happen if the change number is locked or if it is not in a state that allows for undoing.
  Object Type: The object you are trying to modify may not support undo operations at the class level. Some objects have specific rules regarding how changes can be reverted.
  Transport Request Status: The transport request associated with the change number may be in a status that does not allow for undoing changes (e.g., released or already imported into a target system).
  
  Solution:
  
  Check Change Number Status: Verify the status of the change number you are trying to undo. Ensure that it is in a state that allows for undoing changes.
  Review Object Type: Confirm that the object type you are working with supports undo operations at the class level. If it does not, you may need to consider alternative methods for reverting changes.
  Use Correct Transaction: Ensure you are using the correct transaction code for undoing changes. For example, you might need to use transaction codes like SE01, SE09, or SE10 for managing transport requests and change numbers.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on undoing changes for the type of object you are working with.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a recurring problem or if you suspect a system issue.
  
  Related Information:
  
  Change Management in SAP: Understanding the change management process in SAP can help you navigate issues related to change numbers and transport requests.
  Transport Organizer: Familiarize yourself with the Transport Organizer (transaction SE09/SE10) to manage transport requests effectively.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling change numbers and undo operations.
  
  By following these steps, you should be able to identify the cause of the CLUNDO023 error and take appropriate action to resolve it.