src/pages/Zone/ZoneDeliveryPanel.vue

@@ -94,9 +94,9 @@ watch(
                 url="Postcodes/location"
                 :fields="['geoFk', 'code', 'townFk', 'countryFk']"
                 sort-by="code, townFk"
-                option-value="code"
+                option-value="geoFk"
                 option-label="code"
-                option-filter="code"
+                :filter-options="['code', 'geoFk']"
                 hide-selected
                 dense
                 outlined