How To Fix ON129 - List was newly generated

SAP Error Message - Details

• Message type: E = Error

• Message class: ON - Tools in area Object Modeler / Object Editor

• Message number: 129

• Message text: List was newly generated

What causes this issue?

You have chosen Edit->Refresh. The object types were read again from
the database and the relationship environment display was newly set up.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

No action is required. This is just for your information.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ON129 - List was newly generated ?

  The SAP error message ON129, which states "List was newly generated," typically occurs in the context of generating reports or lists in SAP. This message is not necessarily an error but rather an informational message indicating that the list you are trying to access has been regenerated or refreshed.
  Cause:
  
  
  List Refresh: The message appears when a report or list is generated anew, which can happen due to various reasons such as:
  
  Changes in the underlying data.
  User actions that trigger a refresh (e.g., changing selection criteria).
  Scheduled jobs that regenerate reports.
  
  
  
  User Interaction: If a user has made changes to the selection criteria or parameters and then executed the report, the system will regenerate the list based on the new criteria.
  
  
  Solution:
  
  
  Review the List: Since this is an informational message, you can simply review the newly generated list to ensure it meets your expectations.
  
  
  Check Selection Criteria: If you were expecting a different result, double-check the selection criteria or parameters you used to generate the list. Ensure they are set correctly.
  
  
  Re-run the Report: If you believe the list should not have changed, you can try re-running the report with the same parameters to see if the issue persists.
  
  
  Consult Documentation: If you are unsure about the changes in the list, refer to the documentation or help files related to the specific report or transaction you are using.
  
  
  Contact Support: If the message is causing confusion or if you believe there is an underlying issue, consider reaching out to your SAP support team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: The error may be related to specific transaction codes where lists are generated, such as reports in modules like MM (Materials Management), SD (Sales and Distribution), or FI (Financial Accounting).
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific report or transaction you are using.
  User Training: Ensure that users are trained on how to interpret and respond to informational messages in SAP, as they can often be misinterpreted as errors.
  
  In summary, the ON129 message is generally not a cause for concern but rather a notification that the list has been regenerated. Users should verify the list and selection criteria to ensure they are working with the correct data.