SL::DB::Manager::Order->delete_all(all => 1);
SL::DB::Manager::DeliveryOrder->delete_all(all => 1);
SL::DB::Manager::Invoice->delete_all(all => 1);
SL::DB::Manager::Part->delete_all(all => 1);
SL::DB::Manager::Customer->delete_all(all => 1);
SL::DB::Manager::Order->delete_all(all => 1);
SL::DB::Manager::DeliveryOrder->delete_all(all => 1);
SL::DB::Manager::Invoice->delete_all(all => 1);
SL::DB::Manager::Part->delete_all(all => 1);
SL::DB::Manager::Customer->delete_all(all => 1);