diff --git a/apps/assets/api/node.py b/apps/assets/api/node.py
index 2ea2d112c..b8b2707e6 100644
--- a/apps/assets/api/node.py
+++ b/apps/assets/api/node.py
@@ -14,6 +14,7 @@
 # limitations under the License.
 
 from rest_framework import generics, mixins
+from rest_framework.serializers import ValidationError
 from rest_framework.views import APIView
 from rest_framework.response import Response
 from rest_framework_bulk import BulkModelViewSet
@@ -110,7 +111,9 @@ class NodeChildrenApi(mixins.ListModelMixin, generics.CreateAPIView):
         value = request.data.get("value")
         values = [child.value for child in instance.get_children()]
         if value in values:
-            raise AssertionError('The same level node name cannot be the same')
+            raise ValidationError(
+                'The same level node name cannot be the same'
+            )
         node = instance.create_child(value=value)
         return Response(
             {"id": node.id, "key": node.key, "value": node.value},
diff --git a/apps/assets/serializers/node.py b/apps/assets/serializers/node.py
index 9f04fd465..bee350591 100644
--- a/apps/assets/serializers/node.py
+++ b/apps/assets/serializers/node.py
@@ -51,14 +51,17 @@ class NodeSerializer(serializers.ModelSerializer):
         fields = ['id', 'key', 'value', 'parent', 'assets_amount', 'is_node']
         list_serializer_class = BulkListSerializer
 
-    def update(self, instance, validated_data):
-        value = validated_data.get('value')
+    def validate(self, data):
+        value = data.get('value')
+        instance = self.instance
         if not instance.is_root():
             children = instance.parent.get_children().exclude(key=instance.key)
             values = [child.value for child in children]
             if value in values:
-                raise AssertionError('The same level node name cannot be the same')
-        return super().update(instance, validated_data)
+                raise serializers.ValidationError(
+                    'The same level node name cannot be the same'
+                )
+        return data
 
     @staticmethod
     def get_parent(obj):