Migrate Model from One Model to Another › Perform Trial Migration and Migration › Evaluate Migration Error Messages › Object Cannot Be/Must Be Deleted

Object Cannot Be/Must Be Deleted

In general, this message indicates that migration tried to delete an object from the destination model that requires another object in that model.

For example, Entity Type A exists in the source and destination models. It has Attributes B and C. Attribute C is deleted from the source model. However, an attribute view in the destination model references Attribute C.

The migration of Entity Type A:

• Deletes Entity Type A and Attributes B and C from the destination model
• Copies Entity Type A and its component object Attribute B to the destination model
• Tries to re-establish the link between Attribute C and its attribute view

  When it cannot reestablish the link, it terminates the migration and rolls back all object actions.