Hi all,

Someone knows what this error mean?
...

 File 
"/home/ve/sfera/release/sicer/BASE/model/anagraficaAlta/unita_aziendale.py", 
line 154, in aggiorna_capi_bovini
   x.flush()
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/ext/assignmapper.py",
 line 20, in do
   return getattr(session, name)(self, *args, **kwargs)
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/session.py",
 line 319, in flush
   self.uow.flush(self, objects)
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/unitofwork.py",
 line 210, in flush
   flush_context.execute()
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/unitofwork.py",
 line 400, in execute
   UOWExecutor().execute(self, head)
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/unitofwork.py",
 line 1020, in execute
   self.execute_delete_steps(trans, task)
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/unitofwork.py",
 line 1043, in execute_delete_steps
   self.delete_objects(trans, task)
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/unitofwork.py",
 line 1026, in delete_objects
   task.mapper.delete_obj(task.polymorphic_todelete_objects, trans)
 File 
"/home/ve/lib/python2.5/site-packages/SQLAlchemy-0.3.10-py2.5.egg/sqlalchemy/orm/mapper.py",
 line 1322, in delete_obj
   raise exceptions.ConcurrentModificationError("Updated rowcount %d does not match 
number of objects updated %d" % (c.rowcount, len(delete)))

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