diff --git a/SAS/TMSS/src/tmss/tmssapp/schemas/UC1-scheduling-unit-observation-strategy.json b/SAS/TMSS/src/tmss/tmssapp/schemas/UC1-scheduling-unit-observation-strategy.json
index 9e917e322eea7f4f7495828ef9a4d5581dffc2ef..b7ba95dffbfe3d81a8d6830181b6b03796ac3190 100644
--- a/SAS/TMSS/src/tmss/tmssapp/schemas/UC1-scheduling-unit-observation-strategy.json
+++ b/SAS/TMSS/src/tmss/tmssapp/schemas/UC1-scheduling-unit-observation-strategy.json
@@ -62,18 +62,18 @@
         },
         "antenna_set": "HBA_DUAL_INNER",
         "filter": "HBA_110_190",
-        "stations": [
+        "station_groups": [
           {
-            "group": "DUTCH",
-            "max_missing": 4
+            "stations": ["CS001", "CS002", "CS003", "CS004", "CS005", "CS006", "CS007", "CS011", "CS013", "CS017", "CS021", "CS024", "CS026", "CS028", "CS030", "CS031", "CS032", "CS301", "CS302", "CS401", "CS501", "RS106", "RS205", "RS208", "RS210", "RS305", "RS306", "RS307", "RS310", "RS406", "RS407", "RS409", "RS503", "RS508", "RS509"],
+            "max_nr_missing": 4
           },
           {
-            "group": "INTERNATIONAL",
-            "max_missing": 2
+            "stations": ["DE601", "DE602", "DE603", "DE604", "DE605", "DE609", "FR606", "SE607", "UK608", "PL610", "PL611", "PL612", "IE613", "LV614"],
+            "max_nr_missing": 2
           },
           {
-            "group": "INTERNATIONAL_REQUIRED",
-            "max_missing": 1
+            "stations": ["DE601", "DE605"],
+            "max_nr_missing": 1
           }
         ],
         "tile_beam": {