How To Fix DNO166 - Notification is locked by SAP; no authorization to make changes

SAP Error Message - Details

• Message type: E = Error

• Message class: DNO - Messages for General Notifications

• Message number: 166

• Message text: Notification is locked by SAP; no authorization to make changes

What causes this issue?

The notification cannot be changed by SAP because it is locked by SAP
due to missing change authorization. The attempt to unlock it was not
successful.

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?

Contact SAP regarding this problem.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DNO166 - Notification is locked by SAP; no authorization to make changes ?

  The SAP error message DNO166 indicates that a notification is locked by the system, and the user does not have the necessary authorization to make changes to it. This typically occurs in the context of SAP's Plant Maintenance (PM) or Customer Service (CS) modules, where notifications are used to track issues, maintenance requests, or service requests.
  Cause:
  
  Locking Mechanism: The notification is currently being edited by another user or process, which locks it to prevent concurrent modifications.
  Authorization Issues: The user attempting to make changes does not have the required authorizations to edit the notification. This could be due to missing roles or permissions in the user's profile.
  Status of the Notification: The notification may be in a status that does not allow changes (e.g., completed or closed).
  System Configuration: Certain configurations in the system may restrict access to notifications based on user roles or organizational units.
  
  Solution:
  
  
  Check Lock Status: 
  
  Use transaction code SM12 to check if the notification is locked by another user. If it is, you may need to wait until the other user has finished editing or contact them to release the lock.
  
  
  
  Review Authorizations:
  
  Check the user's authorization profile to ensure they have the necessary permissions to edit notifications. This can be done using transaction code SU53 to analyze the last authorization check.
  If necessary, contact your SAP security team to adjust the user's roles or permissions.
  
  
  
  Notification Status:
  
  Verify the status of the notification. If it is in a status that does not allow changes, you may need to change the status to allow editing or create a new notification if applicable.
  
  
  
  Consult Documentation:
  
  Review the relevant SAP documentation or help files for specific details on notification statuses and authorization requirements.
  
  
  
  Contact Support:
  
  If the issue persists after checking locks and authorizations, consider reaching out to your SAP support team for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  IW21: Create Notification
  IW22: Change Notification
  IW23: Display Notification
  SM12: Display and Delete Locks
  SU53: Display Authorization Check
  
  
  
  User Roles: Ensure that the user has the appropriate roles assigned in the SAP system that include permissions for notification management.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to notifications and locking mechanisms.
  
  
  By following these steps, you should be able to identify the cause of the DNO166 error and take appropriate action to resolve it.