How To Fix CMMD045 - A sub-tree of hierarchy & is locked by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: CMMD -

• Message number: 045

• Message text: A sub-tree of hierarchy & is locked by user &

What causes this issue?

A subtree of the article hierarchy is locked by a different user. The
subtree either
contains the selected hierarchy node, or the subtree is included in the
subtree of the
selected hierarchy node.
A subtree of the article hierarchy can be changed by only one user at
at any given time.

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?

The user who set the lock, must also remove it.

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 CMMD045 - A sub-tree of hierarchy & is locked by user & ?

  The SAP error message CMMD045 indicates that a sub-tree of a hierarchy is locked by a specific user. This typically occurs in the context of SAP's hierarchical data management, such as when working with master data, organizational structures, or other hierarchical data models.
  Cause:
  
  User Locking: The user mentioned in the error message has locked a part of the hierarchy for editing. This can happen if the user is currently making changes or has opened the hierarchy for editing and has not yet saved or released the lock.
  Concurrent Access: Another user may be accessing the same hierarchy node, leading to a lock being placed on that sub-tree.
  System Configuration: Certain configurations in the SAP system may enforce locks on hierarchical data to prevent data inconsistencies.
  
  Solution:
  
  Identify the Locking User: Check who the user is that has locked the hierarchy. This can often be done through transaction codes like SM12 (to view lock entries) or SM21 (to check system logs).
  Wait for Release: If the locking user is actively working on the hierarchy, it may be best to wait until they have completed their changes and released the lock.
  Contact the User: If the lock seems to be held unnecessarily (e.g., the user has left their session open), you can contact the user to ask them to save their work and exit the hierarchy.
  Force Unlock (if necessary): If the lock is causing significant issues and the user is unavailable, a system administrator can forcefully remove the lock using transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies if the user was in the middle of making changes.
  Review System Settings: If this issue occurs frequently, it may be worth reviewing the system settings and configurations related to hierarchical data management to see if adjustments can be made to reduce locking conflicts.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (to view and manage locks), SM21 (to view system logs), and possibly SU01 (to manage user profiles).
  Documentation: Refer to SAP Help documentation for more details on hierarchical data management and locking mechanisms.
  User Training: Ensure that users are trained on how to properly manage hierarchical data to minimize locking issues, such as saving changes promptly and exiting sessions when done.
  
  By following these steps, you should be able to resolve the CMMD045 error and manage hierarchical data more effectively in SAP.