_ = un.EachListItem(func(item runtime.Object) error {
			castItem := item.(*unstructured.Unstructured)
			if castItem.GetKind() == name.ServiceStr {
				err := v.validateServicePortPrefix(istioNamespace, castItem)
				if err != nil {
					errs = multierror.Append(errs, err)
				}
			}
			if castItem.GetKind() == name.DeploymentStr {
				err := v.validateDeploymentLabel(istioNamespace, castItem, writer)
				if err != nil {