return err
	}

	runtimeNodeSelector := nodeScheduling.NodeSelector
	newNodeSelector := pod.Spec.NodeSelector
	if newNodeSelector == nil {
		newNodeSelector = runtimeNodeSelector
	} else {
		for key, runtimeClassValue := range runtimeNodeSelector {
			if podValue, ok := newNodeSelector[key]; ok && podValue != runtimeClassValue {

	if args.AddedAffinity == nil {
		return nil
	}
	affinity := args.AddedAffinity
	var errs []error
	if ns := affinity.RequiredDuringSchedulingIgnoredDuringExecution; ns != nil {
		_, err := nodeaffinity.NewNodeSelector(ns, field.WithPath(path.Child("addedAffinity", "requiredDuringSchedulingIgnoredDuringExecution")))
		if err != nil {
			errs = append(errs, err)
		}
	}

	}
	pl := &NodeAffinity{
		handle: h,
	}
	if args.AddedAffinity != nil {
		if ns := args.AddedAffinity.RequiredDuringSchedulingIgnoredDuringExecution; ns != nil {
			pl.addedNodeSelector, err = nodeaffinity.NewNodeSelector(ns)
			if err != nil {
				return nil, fmt.Errorf("parsing addedAffinity.requiredDuringSchedulingIgnoredDuringExecution: %w", err)
			}
		}

		}

		if claim.Status.Allocation != nil {
			if claim.Status.Allocation.AvailableOnNodes != nil {
				nodeSelector, err := nodeaffinity.NewNodeSelector(claim.Status.Allocation.AvailableOnNodes)
				if err != nil {
					return nil, statusError(logger, err)
				}
				s.informationsForClaim[index].availableOnNode = nodeSelector
			}

}

func validateNodeSelectorMutation(fldPath *field.Path, newNodeSelector, oldNodeSelector map[string]string) field.ErrorList {
	var allErrs field.ErrorList

	// Validate no existing node selectors were deleted or mutated.
	for k, v1 := range oldNodeSelector {
		if v2, ok := newNodeSelector[k]; !ok || v1 != v2 {