diff --git a/apps/dataset/serializers/document_serializers.py b/apps/dataset/serializers/document_serializers.py
index 3b92a7e60..ff7048660 100644
--- a/apps/dataset/serializers/document_serializers.py
+++ b/apps/dataset/serializers/document_serializers.py
@@ -141,6 +141,8 @@ class DocumentEditInstanceSerializer(ApiMixin, serializers.Serializer):
         if 'meta' in self.data and self.data.get('meta') is not None:
             dataset_meta_valid_map = self.get_meta_valid_map()
             valid_class = dataset_meta_valid_map.get(document.type)
+            if valid_class is None:
+                return
             valid_class(data=self.data.get('meta')).is_valid(raise_exception=True)