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 8c8e8e5ca2855a5bdf7e37b511e078ceab33ef37..3d95b3a1714f3f9b94f1300b1e8026692a048ac7 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
@@ -81,6 +81,7 @@
         "title": "Beamformer",
         "headerTemplate": "Beamformer {{ self.index }}",
         "additionalProperties": false,
+        "default": {},
         "properties": {
           "name": {
             "type": "string",
@@ -92,6 +93,7 @@
             "title": "Coherent Tied-Array Beams",
             "type": "object",
             "additionalProperties": false,
+            "default": {},
             "properties": {
               "settings": {
                 "$ref": "http://tmss.lofar.org/api/schemas/commonschematemplate/beamforming/1#/definitions/stokes_settings"
@@ -173,6 +175,7 @@
             "title": "Incoherent Tied-Array Beams",
             "type": "object",
             "additionalProperties": false,
+            "default": {},
             "properties": {
               "settings": {
                 "$ref": "http://tmss.lofar.org/api/schemas/commonschematemplate/beamforming/1#/definitions/stokes_settings"
@@ -232,7 +235,14 @@
             "default": [],
             "minItems": 0
           }
-        }
+        },
+        "required": [
+          "name",
+          "coherent",
+          "incoherent",
+          "flys eye",
+          "stations"
+        ]
       }
     }
   },