diff --git a/sale.py b/sale.py
index c480b2d..6c5efd2 100644
--- a/sale.py
+++ b/sale.py
@@ -32,17 +32,19 @@ class Sale(metaclass=PoolMeta):
     @classmethod
     def send_order(cls, args, ctx=None):
         Product = Pool().get('product.product')
+        print(' ARGS => ', args)
         if args['id'] <= 0:
             res = cls.create_sale(args, ctx)
             return res
         else:
             records = cls.browse([args['id']])
             lines_tuple = args.get('lines')
-            action, lines = lines_tuple
-            if action == 'create' and len(lines) > 0:
-                for line in lines:
-                    product = Product(line['product'])
-                    cls._add_values(product.template, line)
+            if lines_tuple:
+                action, lines = lines_tuple
+                if action == 'create' and len(lines) > 0:
+                    for line in lines:
+                        product = Product(line['product'])
+                        cls._add_values(product.template, line)
             cls.write(records, args)
             res = {
                 'record': {'id': args['id']},