diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/schemas/task_template-beamforming_observation-1.json b/SAS/TMSS/backend/src/tmss/tmssapp/schemas/task_template-beamforming_observation-1.json
index f2a54887cfd8e1121e522f0655d914af2c9f2978..28c435ca44ee6d83defdc213878a4b8544b257f2 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/schemas/task_template-beamforming_observation-1.json
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/schemas/task_template-beamforming_observation-1.json
@@ -74,8 +74,8 @@
       "type": "array",
       "title": "Beamformers",
       "additionalItems": false,
-      "minItems": 0,
-      "default": [],
+      "minItems": 1,
+      "default": [{}],
       "items": {
         "type": "object",
         "title": "Beamformer",