How To Fix DNO013 - Notification blocked by USER &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DNO - Messages for General Notifications

• Message number: 013

• Message text: Notification blocked by USER &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DNO013 - Notification blocked by USER &1 ?

  The SAP error message DNO013: Notification blocked by USER &1 typically occurs when a user attempts to process a notification (such as a maintenance notification) that has been blocked by another user. This blocking mechanism is often used to prevent multiple users from making changes to the same notification simultaneously, which could lead to data inconsistencies.
  Cause:
  
  User Locking: The notification is currently locked by another user (indicated by &1 in the error message). This could happen if the other user is editing the notification or has it open in a session.
  Authorization Issues: The user may not have the necessary authorizations to process the notification, leading to it being blocked.
  Status of the Notification: The notification may be in a status that does not allow further processing until certain conditions are met.
  
  Solution:
  
  
  Check User Lock: 
  
  Identify the user who has locked the notification (the user indicated by &1).
  If possible, contact that user to determine if they can release the lock by closing their session or saving their changes.
  
  
  
  Wait and Retry: 
  
  If the user is actively working on the notification, it may be best to wait until they have completed their work and released the lock.
  
  
  
  Use Transaction Codes: 
  
  You can use transaction codes like SM12 to check for user locks in the system. This transaction allows you to see which users have locks on which objects.
  If necessary, a system administrator can remove the lock if it is determined that the lock is no longer valid (e.g., if the user has logged off unexpectedly).
  
  
  
  Check Authorizations: 
  
  Ensure that the user encountering the error has the necessary authorizations to process the notification. This may involve checking roles and permissions assigned to the user.
  
  
  
  Review Notification Status: 
  
  Check the status of the notification to ensure it is in a state that allows processing. If the notification is in a completed or closed status, it may need to be reopened or reactivated.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW21 (Create Notification), IW22 (Change Notification), and IW23 (Display Notification) for working with notifications.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation for notifications and user management to understand how locks are managed within the system.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or support for further investigation.