diff --git a/models/application/metadata-no-id.json b/models/application/metadata-no-id.json
index 9c60cfbb839f51bbf5970737ceb01e2681c032ff..510b70b2d933a2ef690ae9fa1bb8b212b4e2f46e 100644
--- a/models/application/metadata-no-id.json
+++ b/models/application/metadata-no-id.json
@@ -127,18 +127,14 @@
         "data": {
           "type": "object",
           "additionalProperties": false,
-          "required": [
-            "schema"
-          ],
           "properties": {
-            "size": {
-              "type": "integer",
-              "description": "Größe des Dokuments in Bytes"
-            },
             "schema": {
               "$ref": "./schema.json"
             }
-          }
+          },
+          "required": [
+            "schema"
+          ]
         },
         "docs": {
           "type": "array",