diff --git a/pkg/apis/resource/validation/validation.go b/pkg/apis/resource/validation/validation.go
index 9191bf5a348..fcbf8c55c18 100644
--- a/pkg/apis/resource/validation/validation.go
+++ b/pkg/apis/resource/validation/validation.go
@@ -239,15 +239,7 @@ func ValidatePodScheduling(resourceClaim *resource.PodScheduling) field.ErrorLis
 }
 
 func validatePodSchedulingSpec(spec *resource.PodSchedulingSpec, fldPath *field.Path) field.ErrorList {
-	var allErrs field.ErrorList
-	// Checking PotentialNodes for duplicates is intentionally not done. It
-	// could be fairly expensive and the only component which normally has
-	// permissions to set this field, kube-scheduler, is a trusted
-	// component.  Also, if it gets this wrong because of a bug, then the
-	// effect is limited (same semantic).
-	if len(spec.PotentialNodes) > resource.PodSchedulingNodeListMaxSize {
-		allErrs = append(allErrs, field.TooLongMaxLength(fldPath.Child("potentialNodes"), nil, resource.PodSchedulingNodeListMaxSize))
-	}
+	allErrs := validateSliceIsASet(spec.PotentialNodes, resource.PodSchedulingNodeListMaxSize, validateNodeName, fldPath.Child("potentialNodes"))
 	return allErrs
 }
 
@@ -283,15 +275,8 @@ func validatePodSchedulingClaims(claimStatuses []resource.ResourceClaimSchedulin
 	return allErrs
 }
 
-func validatePodSchedulingClaim(claim resource.ResourceClaimSchedulingStatus, fldPath *field.Path) field.ErrorList {
-	var allErrs field.ErrorList
-	// Checking UnsuitableNodes for duplicates is intentionally not done. It
-	// could be fairly expensive and if a resource driver gets this wrong,
-	// then it is only going to have a negative effect for the pods relying
-	// on this driver.
-	if len(claim.UnsuitableNodes) > resource.PodSchedulingNodeListMaxSize {
-		allErrs = append(allErrs, field.TooLongMaxLength(fldPath.Child("unsuitableNodes"), nil, resource.PodSchedulingNodeListMaxSize))
-	}
+func validatePodSchedulingClaim(status resource.ResourceClaimSchedulingStatus, fldPath *field.Path) field.ErrorList {
+	allErrs := validateSliceIsASet(status.UnsuitableNodes, resource.PodSchedulingNodeListMaxSize, validateNodeName, fldPath.Child("unsuitableNodes"))
 	return allErrs
 }
 
@@ -315,3 +300,11 @@ func ValidateClaimTemplateUpdate(template, oldTemplate *resource.ResourceClaimTe
 	allErrs = append(allErrs, ValidateClaimTemplate(template)...)
 	return allErrs
 }
+
+func validateNodeName(name string, fldPath *field.Path) field.ErrorList {
+	var allErrs field.ErrorList
+	for _, msg := range corevalidation.ValidateNodeName(name, false) {
+		allErrs = append(allErrs, field.Invalid(fldPath, name, msg))
+	}
+	return allErrs
+}
diff --git a/pkg/apis/resource/validation/validation_podscheduling_test.go b/pkg/apis/resource/validation/validation_podscheduling_test.go
index 138f70004bf..30193eb5a3a 100644
--- a/pkg/apis/resource/validation/validation_podscheduling_test.go
+++ b/pkg/apis/resource/validation/validation_podscheduling_test.go
@@ -194,6 +194,7 @@ func TestValidatePodScheduling(t *testing.T) {
 
 func TestValidatePodSchedulingUpdate(t *testing.T) {
 	validScheduling := testPodScheduling("foo", "ns", resource.PodSchedulingSpec{})
+	badName := "!@#$%^"
 
 	scenarios := map[string]struct {
 		oldScheduling *resource.PodScheduling
@@ -220,8 +221,8 @@ func TestValidatePodSchedulingUpdate(t *testing.T) {
 				return scheduling
 			},
 		},
-		"invalid-potential-nodes": {
-			wantFailures:  field.ErrorList{field.TooLongMaxLength(field.NewPath("spec", "potentialNodes"), nil, resource.PodSchedulingNodeListMaxSize)},
+		"invalid-potential-nodes-too-long": {
+			wantFailures:  field.ErrorList{field.TooLongMaxLength(field.NewPath("spec", "potentialNodes"), 129, resource.PodSchedulingNodeListMaxSize)},
 			oldScheduling: validScheduling,
 			update: func(scheduling *resource.PodScheduling) *resource.PodScheduling {
 				for i := 0; i < resource.PodSchedulingNodeListMaxSize+1; i++ {
@@ -230,6 +231,14 @@ func TestValidatePodSchedulingUpdate(t *testing.T) {
 				return scheduling
 			},
 		},
+		"invalid-potential-nodes-name": {
+			wantFailures:  field.ErrorList{field.Invalid(field.NewPath("spec", "potentialNodes").Index(0), badName, "a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')")},
+			oldScheduling: validScheduling,
+			update: func(scheduling *resource.PodScheduling) *resource.PodScheduling {
+				scheduling.Spec.PotentialNodes = append(scheduling.Spec.PotentialNodes, badName)
+				return scheduling
+			},
+		},
 	}
 
 	for name, scenario := range scenarios {
@@ -243,6 +252,7 @@ func TestValidatePodSchedulingUpdate(t *testing.T) {
 
 func TestValidatePodSchedulingStatusUpdate(t *testing.T) {
 	validScheduling := testPodScheduling("foo", "ns", resource.PodSchedulingSpec{})
+	badName := "!@#$%^"
 
 	scenarios := map[string]struct {
 		oldScheduling *resource.PodScheduling
@@ -283,7 +293,7 @@ func TestValidatePodSchedulingStatusUpdate(t *testing.T) {
 			},
 		},
 		"invalid-too-long-claim-status": {
-			wantFailures:  field.ErrorList{field.TooLongMaxLength(field.NewPath("status", "claims").Index(0).Child("unsuitableNodes"), nil, resource.PodSchedulingNodeListMaxSize)},
+			wantFailures:  field.ErrorList{field.TooLongMaxLength(field.NewPath("status", "claims").Index(0).Child("unsuitableNodes"), 129, resource.PodSchedulingNodeListMaxSize)},
 			oldScheduling: validScheduling,
 			update: func(scheduling *resource.PodScheduling) *resource.PodScheduling {
 				scheduling.Status.ResourceClaims = append(scheduling.Status.ResourceClaims,
@@ -300,6 +310,22 @@ func TestValidatePodSchedulingStatusUpdate(t *testing.T) {
 				return scheduling
 			},
 		},
+		"invalid-node-name": {
+			wantFailures:  field.ErrorList{field.Invalid(field.NewPath("status", "claims").Index(0).Child("unsuitableNodes").Index(0), badName, "a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')")},
+			oldScheduling: validScheduling,
+			update: func(scheduling *resource.PodScheduling) *resource.PodScheduling {
+				scheduling.Status.ResourceClaims = append(scheduling.Status.ResourceClaims,
+					resource.ResourceClaimSchedulingStatus{
+						Name: "my-claim",
+					},
+				)
+				scheduling.Status.ResourceClaims[0].UnsuitableNodes = append(
+					scheduling.Status.ResourceClaims[0].UnsuitableNodes,
+					badName,
+				)
+				return scheduling
+			},
+		},
 	}
 
 	for name, scenario := range scenarios {