Location is optional for beverage_supply so make it omitempty

config-template.json

@@ -46,6 +46,16 @@
             "club-assistant"
           ]
         }
+      ],
+      "beverage_supply": [
+        {
+          "sensor_data": {
+            "unit": "btl"
+          },
+          "allowed_credentials": [
+            "club-assistant"
+          ]
+        }
       ]
     },
     "state": {

types/v14.go

@@ -45,7 +45,7 @@ type SpaceState struct {
 type EnvironmentSensor struct {
 	Value       float64 `json:"value"`
 	Unit        string  `json:"unit"`
-	Location    string  `json:"location"`
+	Location    string  `json:"location,omitempty"`
 	Name        string  `json:"name,omitempty"`
 	Description string  `json:"description,omitempty"`
 	LastChange  int64   `json:"lastchange,omitempty"`
@@ -61,7 +61,7 @@ type PersistentStateV14 struct {
 
 type PersistentEnvironmentSensor struct {
 	Value      float64 `json:"value"`
-	Location   string  `json:"location"`
+	Location   string  `json:"location,omitempty"`
 	Name       string  `json:"name,omitempty"`
 	LastChange int64   `json:"lastchange"`
 }