diff --git a/schema/entities/person.json b/schema/entities/person.json
index a2f995a7..811fb61b 100644
--- a/schema/entities/person.json
+++ b/schema/entities/person.json
@@ -67,9 +67,9 @@
                     "Marie Salomea",
                     "May-Britt"
                 ],
-                "type": "string",
-                "default": []
+                "type": "string"
             },
+            "default": [],
             "sameAs": [
                 "http://xmlns.com/foaf/0.1/givenName",
                 "https://schema.org/givenName"
diff --git a/schema/entities/primary-source.json b/schema/entities/primary-source.json
index 09086755..cf57dd38 100644
--- a/schema/entities/primary-source.json
+++ b/schema/entities/primary-source.json
@@ -9,7 +9,8 @@
             "sameAs": [
                 "http://purl.org/dc/terms/alternative"
             ],
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "contact": {
             "items": {
@@ -28,7 +29,8 @@
                     "http://www.w3.org/ns/dcat#contactPoint"
                 ]
             },
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "description": {
             "items": {
@@ -37,7 +39,8 @@
             "sameAs": [
                 "http://purl.org/dc/terms/description"
             ],
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "documentation": {
             "items": {
@@ -46,7 +49,8 @@
             "sameAs": [
                 "http://purl.org/dc/terms/isReferencedBy"
             ],
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "hadPrimarySource": {
             "$ref": "/schema/entities/primary-source#/identifier",
@@ -73,7 +77,8 @@
             "items": {
                 "$ref": "/schema/fields/link"
             },
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "stableTargetId": {
             "$ref": "/schema/fields/identifier"
@@ -85,7 +90,8 @@
             "sameAs": [
                 "http://purl.org/dc/terms/title"
             ],
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "unitInCharge": {
             "items": {
@@ -94,7 +100,8 @@
             "sameAs": [
                 "http://dcat-ap.de/def/dcatde/maintainer"
             ],
-            "type": "array"
+            "type": "array",
+            "default": []
         },
         "version": {
             "anyOf": [
diff --git a/schema/entities/resource.json b/schema/entities/resource.json
index dbb6190c..e86846d0 100644
--- a/schema/entities/resource.json
+++ b/schema/entities/resource.json
@@ -21,8 +21,7 @@
             "sameAs": [
                 "http://purl.org/dc/terms/accessRights"
             ],
-            "useScheme": "https://mex.rki.de/item/access-restriction",
-            "default": []
+            "useScheme": "https://mex.rki.de/item/access-restriction"
         },
         "accrualPeriodicity": {
             "anyOf": [
@@ -130,8 +129,7 @@
             "default": null,
             "sameAs": [
                 "http://purl.org/dc/terms/created"
-            ],
-            "type": "string"
+            ]
         },
         "creator": {
             "items": {
@@ -330,7 +328,6 @@
             "sameAs": [
                 "http://purl.org/dc/terms/modified"
             ],
-            "type": "string",
             "default": null
         },
         "publication": {
diff --git a/schema/entities/variable.json b/schema/entities/variable.json
index ea71c3e5..132b9eab 100644
--- a/schema/entities/variable.json
+++ b/schema/entities/variable.json
@@ -117,7 +117,8 @@
                 ],
                 "type": "string"
             },
-            "type": "array"
+            "type": "array",
+            "default": []
         }
     },
     "required": [