diff --git a/lib/metadataTypes/definitions/AttributeSet.definition.js b/lib/metadataTypes/definitions/AttributeSet.definition.js
index 47e77cde4..22d196ba0 100644
--- a/lib/metadataTypes/definitions/AttributeSet.definition.js
+++ b/lib/metadataTypes/definitions/AttributeSet.definition.js
@@ -119,6 +119,12 @@ module.exports = {
             retrieving: true,
             template: null,
         },
+        'dataRetentionProperties.periodLength': {
+            isCreateable: null,
+            isUpdateable: null,
+            retrieving: true,
+            template: null,
+        },
         definitionID: {
             isCreateable: null,
             isUpdateable: null,
@@ -859,5 +865,11 @@ module.exports = {
             retrieving: true,
             template: null,
         },
+        r__dataExtension_CustomerKey: {
+            isCreateable: null,
+            isUpdateable: null,
+            retrieving: true,
+            template: null,
+        },
     },
 };