diff --git a/models/application/public-service-type.json b/models/application/public-service-type.json
index bdb4d7f18e370abf04258b3aedc9917576c66aa0..ae65c9b784407c259a66ceade030beba0c90ecc2 100644
--- a/models/application/public-service-type.json
+++ b/models/application/public-service-type.json
@@ -46,6 +46,10 @@
       "type": "string",
       "pattern": "^[0-9]{2}([0-9]{3}){1,4}$",
       "description": "ID aus dem Leistungskatalog (Leika)"
+    },
+    "legalBasis": {
+      "type": "string",
+      "description": "Rechtsgrundlage"
     }
   },
   "required": [