public void save(DesignationDto Designation_dto)
        {
            try
            {
                using (TransactionScope tx = new TransactionScope(TransactionScopeOption.Required))
                {
                    var DesignationWithSamePosition = _DesignationRepository.getByPosition(Designation_dto.position);
                    if (DesignationWithSamePosition != null)
                    {
                        throw new ItemUsedException("This position is already used.");
                    }
                    Designation Designation          = new Designation();
                    var         designation_position = _DesignationRepository.getAll();

                    _DesignationMaker.copy(ref Designation, Designation_dto);
                    _DesignationRepository.insert(Designation);

                    tx.Complete();
                }
            }
            catch (Exception)
            {
                throw;
            }
        }