How To Fix USMD1131 - Activation not possible; active data model &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 131

• Message text: Activation not possible; active data model &1 already exists

What causes this issue?

System settings allow for the existence of only one active data model.

System Response

Data model &V2& will not be activated.

How to fix this error?

If you require more than one active data model, contact SAP Support.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1131 - Activation not possible; active data model &1 already exists ?

  The SAP error message USMD1131 indicates that there is an issue with the activation of a data model in the SAP Master Data Governance (MDG) environment. Specifically, it means that an active data model with the same name already exists, preventing the activation of the new or modified data model.
  Cause:
  The error occurs when you attempt to activate a data model that has the same name as an already active data model. This can happen due to:
  
  Attempting to activate a data model that has not been properly deactivated.
  A naming conflict where two data models share the same identifier.
  A previous activation process that did not complete successfully, leaving the data model in an active state.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Active Data Models:
  
  Use transaction code MDGIMG or navigate to the relevant configuration area to check the list of active data models.
  Identify the data model that is currently active and has the same name as the one you are trying to activate.
  
  
  
  Deactivate the Existing Data Model:
  
  If the existing data model is no longer needed, you can deactivate it. This can typically be done through the same configuration area where you manage data models.
  Ensure that you have the necessary authorizations to perform this action.
  
  
  
  Rename the New Data Model:
  
  If you need to keep both data models, consider renaming the new data model to avoid the conflict.
  
  
  
  Check for Incomplete Activation:
  
  If the previous activation process was interrupted, you may need to check for any incomplete or inconsistent states in the system. You can use transaction SLG1 to check for logs related to the activation process.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or notes related to data model activation in MDG for any specific instructions or considerations.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: MDGIMG (to access the MDG configuration), SLG1 (to view application logs).
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on data model activation.
  MDG Documentation: Review the official SAP Master Data Governance documentation for best practices and troubleshooting tips related to data model management.
  
  By following these steps, you should be able to resolve the USMD1131 error and successfully activate your data model.