diff --git a/DataWarehouseAutomation/DataWarehouseAutomation/DataObjectMappingList.cs b/DataWarehouseAutomation/DataWarehouseAutomation/DataObjectMappingList.cs
index 809381f..a69cb9f 100644
--- a/DataWarehouseAutomation/DataWarehouseAutomation/DataObjectMappingList.cs
+++ b/DataWarehouseAutomation/DataWarehouseAutomation/DataObjectMappingList.cs
@@ -25,9 +25,16 @@ public class DataObjectMappingList
     public string? Name { get; set; }
 
     /// <summary>
-    /// Free-form and optional classification for the mapping for use in data logistics generation logic (evaluation).
+    /// Free-form and optional classification for the mapping for use in data logistics generation logic.
     /// </summary>
     [JsonPropertyName("classifications")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
     public List<DataClassification>? Classifications { get; set; }
+
+    /// <summary>
+    /// The collection of extension Key/Value pairs.
+    /// </summary>
+    [JsonPropertyName("extensions")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+    public List<Extension>? Extensions { get; set; }
 }
diff --git a/GenericInterface/interfaceDataWarehouseAutomationMetadataV2_0.json b/GenericInterface/interfaceDataWarehouseAutomationMetadataV2_0.json
index c80a88d..683d5f2 100644
--- a/GenericInterface/interfaceDataWarehouseAutomationMetadataV2_0.json
+++ b/GenericInterface/interfaceDataWarehouseAutomationMetadataV2_0.json
@@ -10,6 +10,33 @@
   "properties": {
     "dataObjectMappings": {
       "$ref": "#/definitions/dataObjectMappings"
+    },
+    "name": {
+      "$id": "#/definitions/dataObjectMappings/properties/name",
+      "title": "Name",
+      "description": "Optional name of the data object mapping list.",
+      "type": "string"
+    },
+    "classifications": {
+      "$id": "#/definitions/dataObjectMappings/properties/classifications",
+      "title": "Classifications",
+      "description": "Classification for the data object mapping list.",
+      "type": [ "array", "null" ],
+      "items": {
+        "$ref": "#/definitions/dataClassification"
+      },
+      "minItems": 0,
+      "uniqueItems": true
+    },
+    "extensions": {
+      "$id": "#/definitions/dataObjectMappings/properties/extensions",
+      "description": "Key/Value pair extension object.",
+      "type": [ "array", "null" ],
+      "items": {
+        "$ref": "#/definitions/extension"
+      },
+      "minItems": 0,
+      "uniqueItems": true
     }
   },
   "definitions": {