diff --git a/pkg/registry/apis/alerting/notifications/timeinterval/conversions.go b/pkg/registry/apis/alerting/notifications/timeinterval/conversions.go
index 64d08635b26..15772b5d2f5 100644
--- a/pkg/registry/apis/alerting/notifications/timeinterval/conversions.go
+++ b/pkg/registry/apis/alerting/notifications/timeinterval/conversions.go
@@ -11,6 +11,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/apiserver/endpoints/request"
 	"github.com/grafana/grafana/pkg/services/ngalert/api/tooling/definitions"
 	ngmodels "github.com/grafana/grafana/pkg/services/ngalert/models"
+	"github.com/grafana/grafana/pkg/services/ngalert/provisioning"
 )
 
 func convertToK8sResources(orgID int64, intervals []definitions.MuteTimeInterval, namespacer request.NamespaceMapper, selector fields.Selector) (*model.TimeIntervalList, error) {
@@ -74,14 +75,14 @@ func convertToDomainModel(interval *model.TimeInterval) (definitions.MuteTimeInt
 	result := definitions.MuteTimeInterval{}
 	err = json.Unmarshal(b, &result)
 	if err != nil {
-		return definitions.MuteTimeInterval{}, err
+		return definitions.MuteTimeInterval{}, provisioning.MakeErrTimeIntervalInvalid(err)
 	}
 	result.Version = interval.ResourceVersion
 	result.UID = interval.ObjectMeta.Name
 	result.Provenance = definitions.Provenance(ngmodels.ProvenanceNone)
 	err = result.Validate()
 	if err != nil {
-		return definitions.MuteTimeInterval{}, err
+		return definitions.MuteTimeInterval{}, provisioning.MakeErrTimeIntervalInvalid(err)
 	}
 	return result, nil
 }
diff --git a/pkg/tests/apis/alerting/notifications/timeinterval/timeinterval_test.go b/pkg/tests/apis/alerting/notifications/timeinterval/timeinterval_test.go
index 352d6940402..6ba9df07f5c 100644
--- a/pkg/tests/apis/alerting/notifications/timeinterval/timeinterval_test.go
+++ b/pkg/tests/apis/alerting/notifications/timeinterval/timeinterval_test.go
@@ -778,3 +778,54 @@ func TestIntegrationTimeIntervalReferentialIntegrity(t *testing.T) {
 		})
 	})
 }
+
+func TestIntegrationTimeIntervalValidation(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test")
+	}
+
+	ctx := context.Background()
+	helper := getTestHelper(t)
+
+	adminK8sClient, err := versioned.NewForConfig(helper.Org1.Admin.NewRestConfig())
+	require.NoError(t, err)
+	adminClient := adminK8sClient.NotificationsV0alpha1().TimeIntervals("default")
+
+	testCases := []struct {
+		name     string
+		interval v0alpha1.TimeIntervalSpec
+	}{
+		{
+			name: "missing name",
+			interval: v0alpha1.TimeIntervalSpec{
+				Name:          "",
+				TimeIntervals: v0alpha1.IntervalGenerator{}.GenerateMany(1),
+			},
+		},
+		{
+			name: "invalid interval",
+			interval: v0alpha1.TimeIntervalSpec{
+				Name: "test",
+				TimeIntervals: []v0alpha1.Interval{
+					{
+						DaysOfMonth: []string{"1-31"},
+					},
+				},
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			i := &v0alpha1.TimeInterval{
+				ObjectMeta: v1.ObjectMeta{
+					Namespace: "default",
+				},
+				Spec: tc.interval,
+			}
+			_, err = adminClient.Create(ctx, i, v1.CreateOptions{})
+			require.Error(t, err)
+			require.Truef(t, errors.IsBadRequest(err), "Expected BadRequest, got: %s", err)
+		})
+	}
+}