How To Fix DMC_GENERAL322 - Migration object can no longer be used; rule &3 has been changed

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_GENERAL - MWB: General Messages

• Message number: 322

• Message text: Migration object can no longer be used; rule &3 has been changed

What causes this issue?

Migration object cannot be used; a changed rule is no longer compatible
with the object

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 migration object "&V1&" can no longer be used in the project "&V2&".
The parameters for at least one rule used in migration object were
changed.
In order to work with this migration object, you need to create a new
migration project, and then copy the migration object to the newly
created project.

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 DMC_GENERAL322 - Migration object can no longer be used; rule &3 has been changed ?

  The SAP error message DMC_GENERAL322 indicates that a migration object can no longer be used because a specific rule (identified by &3) has been changed. This error typically occurs during data migration processes, particularly when using the SAP Data Migration Cockpit or similar tools.
  Cause:
  
  
  Rule Change: The most common cause of this error is that a migration rule associated with the migration object has been modified after the migration object was created. This could happen if:
  
  A user or administrator updated the migration rules in the system.
  There was a change in the configuration or mapping of the data that affects the migration process.
  
  
  
  Inconsistent State: The migration object may be in an inconsistent state due to changes in the underlying data model or business rules.
  
  
  Solution:
  To resolve the DMC_GENERAL322 error, you can follow these steps:
  
  
  Review Changes: Check the migration rules that have been modified. Identify what changes were made to rule &3 and understand how they impact the migration object.
  
  
  Recreate Migration Object: If the migration object is no longer valid due to the changes in the rules, you may need to recreate the migration object. This involves:
  
  Deleting the existing migration object.
  Creating a new migration object that reflects the updated rules.
  
  
  
  Validate Migration Rules: Ensure that the migration rules are correctly defined and that they align with the data you are trying to migrate. Validate the rules to ensure they are functioning as expected.
  
  
  Test Migration: After making the necessary adjustments, perform a test migration to ensure that the changes have resolved the issue and that the migration can proceed without errors.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration object and rules for additional guidance and best practices.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for detailed information on handling migration objects and rules.
  Support: If the issue persists, consider reaching out to SAP support for assistance, especially if the changes to the rules were not made by your team.
  
  By following these steps, you should be able to address the DMC_GENERAL322 error and continue with your data migration process.