diff --git a/src/tests/test_monitored.py b/src/tests/test_monitored.py
index 3ff6bcc..4111dc0 100644
--- a/src/tests/test_monitored.py
+++ b/src/tests/test_monitored.py
@@ -68,7 +68,8 @@ def setUp(self):
             area=100.0,
             climatology=['climate1', 'climate2'],
             other_attributes=['attr1', 'attr2'],
-            watershed=self.watershed
+            watershed=self.watershed,
+            ext_id='512'
         )
         self.waterpoint.save()
         # Crea un objeto DataEntry de prueba con referencia al objeto Waterpoint mockeado