Use single_config_entry in KNX manifest (#112526)

homeassistant/components/knx/config_flow.py

@@ -756,8 +756,6 @@ class KNXConfigFlow(KNXCommonFlow, ConfigFlow, domain=DOMAIN):
 
     async def async_step_user(self, user_input: dict | None = None) -> ConfigFlowResult:
         """Handle a flow initialized by the user."""
-        if self._async_current_entries():
-            return self.async_abort(reason="single_instance_allowed")
         return await self.async_step_connection_type()
 
 

homeassistant/components/knx/manifest.json

@@ -14,5 +14,6 @@
     "xknx==2.12.2",
     "xknxproject==3.7.0",
     "knx-frontend==2024.1.20.105944"
-  ]
+  ],
+  "single_config_entry": true
 }

homeassistant/components/knx/strings.json

@@ -108,10 +108,6 @@
         }
       }
     },
-    "abort": {
-      "already_configured": "[%key:common::config_flow::abort::already_configured_service%]",
-      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]"
-    },
     "error": {
       "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
       "invalid_backbone_key": "Invalid backbone key. 32 hexadecimal numbers expected.",

homeassistant/generated/integrations.json

@@ -3023,7 +3023,8 @@
       "name": "KNX",
       "integration_type": "hub",
       "config_flow": true,
-      "iot_class": "local_push"
+      "iot_class": "local_push",
+      "single_config_entry": true
     },
     "kodi": {
       "name": "Kodi",