How To Fix UC0004 - Data model was changed too often; restart transaction &1

SAP Error Message - Details

• Message type: E = Error

• Message class: UC0 - General Messages for SAP Consolidation

• Message number: 004

• Message text: Data model was changed too often; restart transaction &1

What causes this issue?

Program code must be generated every time the data model changes. This
may occur only a certain number of times during a session.

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?

Restart the present transaction &V1&.

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 UC0004 - Data model was changed too often; restart transaction &1 ?

  The SAP error message UC0004 indicates that the data model has been changed too frequently during a transaction, which can lead to inconsistencies or performance issues. This error typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there are multiple changes to the data model (like InfoObjects, InfoProviders, or other data structures) within a single transaction.
  Cause:
  
  Frequent Changes: The primary cause of this error is that the data model is being modified too often within a single transaction. This can happen if multiple users or processes are trying to make changes simultaneously.
  Long-running Transactions: If a transaction takes too long to complete, it may exceed the allowed number of changes to the data model.
  System Configuration: Certain system settings or configurations may limit the number of changes allowed in a single transaction.
  
  Solution:
  
  Restart the Transaction: The immediate solution is to restart the transaction that triggered the error. This will reset the state and allow you to proceed with the changes.
  Reduce Changes: Try to minimize the number of changes made to the data model within a single transaction. If possible, break down the changes into smaller, more manageable transactions.
  Check for Concurrent Changes: Ensure that no other users or processes are making changes to the same data model simultaneously. Coordinate with your team to avoid conflicts.
  Review System Settings: Consult with your SAP Basis or system administrator to review the system settings related to transaction handling and data model changes. They may need to adjust parameters to allow for more changes if necessary.
  Monitor Performance: Keep an eye on the performance of your transactions and the overall system. If you notice frequent occurrences of this error, it may indicate a need for optimization.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error. SAP frequently updates its knowledge base with solutions for known issues.
  Transaction Logs: Review transaction logs to identify patterns or specific actions that lead to this error. This can help in diagnosing the root cause.
  Documentation: Refer to SAP documentation for best practices on managing data models and transactions in SAP BW or HANA.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.