How To Fix KS120 - Hierarchy is at present blocked against changes

KS120 - Overview

• Message type: E = Error

• Message class: KS - RK-S Master Data Maintenance

• Message number: 120

• Message text: Hierarchy is at present blocked against changes

What causes this issue?

User &V1& is currently working on the cost center group or the entire
standard hierarchy. At the moment you cannot assign the cost center to
another group or create a new cost center, since these changes also
affect the standard hierarchy.

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

System Response

How to fix this error?

Check whether you are running the transaction in another session or
wait until the user has finished processing. Contact the other user if
necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KS120 - Hierarchy is at present blocked against changes ?

  The SAP error message KS120, which states "Hierarchy is at present blocked against changes," typically occurs when you attempt to make changes to a cost center hierarchy or a similar hierarchical structure in SAP that is currently locked for editing. This can happen for several reasons, including:
  Causes:
  
  Locked Hierarchy: The hierarchy may be locked for changes due to ongoing processes, such as a period being closed or a user having the hierarchy open in another session.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the hierarchy.
  System Settings: Certain system settings or configurations may prevent changes to the hierarchy during specific periods (e.g., financial closing periods).
  Transport Requests: If the hierarchy is part of a transport request that is currently being processed, it may be locked.
  
  Solutions:
  
  Check Lock Status: Verify if the hierarchy is indeed locked. You can do this by checking the transaction code KSH1 (Create Cost Center