diff --git a/unittests/table_json_conversion/data/error_simple_data.json b/unittests/table_json_conversion/data/error_simple_data.json
index bfea88b675ab2a6e0c1787fc401afec5c564c006..4d57b0335b4685ea82f1668d50b52a9d30ef1759 100644
--- a/unittests/table_json_conversion/data/error_simple_data.json
+++ b/unittests/table_json_conversion/data/error_simple_data.json
@@ -1,11 +1,11 @@
 {
-  "Training": {
+  "Training": [{
     "duration": 1.0,
     "participants": 0.5
-  },
-  "Person": {
+  }],
+  "Person": [{
     "family_name": "Auric",
     "given_name": "Goldfinger",
     "Organisation": "Federal Reserve"
-  }
+  }]
 }
diff --git a/unittests/table_json_conversion/data/indirect_data.json b/unittests/table_json_conversion/data/indirect_data.json
index c77dd1ff2a703af6b6b2a0db19f450ac10616d9b..76db75d97e1dafff223ea2b27ecca1086d6bc4af 100644
--- a/unittests/table_json_conversion/data/indirect_data.json
+++ b/unittests/table_json_conversion/data/indirect_data.json
@@ -1,5 +1,5 @@
 {
-  "Wrapper": {
+  "Wrapper": [{
     "Results": [
       {
         "year": 2022,
@@ -14,5 +14,5 @@
       "name": "Basic Training",
       "url": "www.example.com/training/basic"
     }
-  }
+  }]
 }
diff --git a/unittests/table_json_conversion/data/multiple_choice_data.json b/unittests/table_json_conversion/data/multiple_choice_data.json
index 1f14911ea79e8d78a452bb221f693d1a01cce744..ee24ef7adbd61abf22d47bb3d49f43f3e1e26501 100644
--- a/unittests/table_json_conversion/data/multiple_choice_data.json
+++ b/unittests/table_json_conversion/data/multiple_choice_data.json
@@ -1,5 +1,5 @@
 {
-  "Training": {
+  "Training": [{
     "name": "Super Skill Training",
     "date": "2024-04-17",
     "skills": [
@@ -7,5 +7,5 @@
       "Evaluation"
     ],
     "exam_types": []
-  }
+  }]
 }
diff --git a/unittests/table_json_conversion/data/multiple_refs_data.json b/unittests/table_json_conversion/data/multiple_refs_data.json
index 5b8ce9136635832111abb2206d8afe1bc7c58444..fa7c7af8e25096d15683bc924a41fb9572db3eb5 100644
--- a/unittests/table_json_conversion/data/multiple_refs_data.json
+++ b/unittests/table_json_conversion/data/multiple_refs_data.json
@@ -1,5 +1,5 @@
 {
-  "Training": {
+  "Training": [{
     "trainer": [],
     "participant": [
       {
@@ -44,5 +44,5 @@
     "date": "2024-03-21T14:12:00.000Z",
     "url": "www.indiscale.com",
     "name": "Example training with multiple organizations."
-  }
+  }]
 }
diff --git a/unittests/table_json_conversion/data/simple_data.json b/unittests/table_json_conversion/data/simple_data.json
index 9997f17e76a46d5e97d842fdee40626047e7a347..92a1661a7e975747fa346997c0a3309e740c7324 100644
--- a/unittests/table_json_conversion/data/simple_data.json
+++ b/unittests/table_json_conversion/data/simple_data.json
@@ -1,5 +1,5 @@
 {
-  "Training": {
+  "Training": [{
     "date": "2023-01-01",
     "url": "www.indiscale.com",
     "coach": [
@@ -23,10 +23,10 @@
     "participants": 1,
     "subjects": ["Math", "Physics"],
     "remote": false
-  },
-  "Person": {
+  }],
+  "Person": [{
     "family_name": "Steve",
     "given_name": "Stevie",
     "Organisation": "IMF"
-  }
+  }]
 }
diff --git a/unittests/table_json_conversion/data/simple_data_ascii_chars.json b/unittests/table_json_conversion/data/simple_data_ascii_chars.json
index b1d13ebee5d6e3949fa606a130e6f5819bfc4bc8..84e22b9bcbf3b5c053d955ed398b442379a99395 100644
--- a/unittests/table_json_conversion/data/simple_data_ascii_chars.json
+++ b/unittests/table_json_conversion/data/simple_data_ascii_chars.json
@@ -1,5 +1,5 @@
 {
-  "Training": {
+  "Training": [{
     "date": "2023-01-01",
     "url": "char: >\u0001\u0002\u0003\u0004\u0005\u0006\u0007\u0008\u0009<",
     "subjects": [
@@ -9,10 +9,10 @@
       ">\u0020\u0021\u0022\u0023\u0024\u0025\u0026\u0027<",
       ">\u0028\u0029\u002a\u002b\u002c\u002d\u002e\u002f<"
     ]
-  },
-  "Person": {
+  }],
+  "Person": [{
     "family_name": "Steve",
     "given_name": "Stevie",
     "Organisation": "IMF"
-  }
+  }]
 }