How To Fix MDG_DT_UI021 - Create/Copy of Data Model not possible as the Viewcluster is locked by &2

MDG_DT_UI021 - Overview

• Message type: E = Error

• Message class: MDG_DT_UI - Messages related to the Configuration Workbench UI

• Message number: 021

• Message text: Create/Copy of Data Model not possible as the Viewcluster is locked by &2

What causes this issue?

The VC_USMD001 view cluster is open in edit mode by the above mentioned
user.
As a result, all entries of the data model are locked and you cannot
create or copy a new data model.

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?

Request that the user closes VC_USMD001 or opens it in display mode
rather than in edit mode.
Continue creating the new data model from the Configuration Workbench.

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 MDG_DT_UI021 - Create/Copy of Data Model not possible as the Viewcluster is locked by &2 ?

  The SAP error message MDG_DT_UI021 indicates that the system is unable to create or copy a data model because the view cluster is locked by another user or process. This typically occurs in the context of SAP Master Data Governance (MDG) when multiple users are trying to access or modify the same data model simultaneously.
  
  Cause:
  
  View Cluster Locking: The view cluster associated with the data model is currently locked by another user or process. This can happen if another user is editing the same data model or if a previous session did not release the lock properly.
  Long-running Transactions: If a transaction is taking too long to complete, it may hold the lock longer than expected.
  System Issues: Occasionally, system issues or bugs can lead to locks not being released properly.
  
  
  Solution:
  
  
  Check for Active Sessions: Use transaction code SM12 to check for any active locks on the view cluster. You can identify the user