diff --git a/DeviceManager/SerializationModels.py b/DeviceManager/SerializationModels.py
index e0a087a..9ef293d 100644
--- a/DeviceManager/SerializationModels.py
+++ b/DeviceManager/SerializationModels.py
@@ -52,8 +52,8 @@ class AttrSchema(Schema):
     updated = fields.DateTime(dump_only=True)
     type = fields.Str(required=True)
     value_type = fields.Str(required=True)
-    static_value = fields.Field()
-    template_id = fields.Str()
+    static_value = fields.Field(allow_none=True)
+    template_id = fields.Str(dump_only=True)
 
     metadata = fields.Nested(MetaSchema, many=True, attribute='children', validate=validate_children_attr_label)
 
@@ -89,7 +89,6 @@ def set_import_id(self, data):
     def remove_null_values(self, data):
         return {key: value for key, value in data.items() if value is not None}
 
-
 template_schema = TemplateSchema()
 template_list_schema = TemplateSchema(many=True)