diff --git a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
index ab2fb10..e5296a1 100644
--- a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
@@ -197,7 +197,8 @@ public function disable() {
    * {@inheritdoc}
    */
   public function setStatus($status) {
-    $this->status = (bool) $status;
+    $status_key = $this->getEntityType()->getKey('status');
+    $this->{$status_key} = (bool) $status;
     return $this;
   }
 
@@ -205,7 +206,8 @@ public function setStatus($status) {
    * {@inheritdoc}
    */
   public function status() {
-    return !empty($this->status);
+    $status_key = $this->getEntityType()->getKey('status');
+    return !empty($this->{$status_key});
   }
 
   /**
@@ -253,13 +255,20 @@ public function createDuplicate() {
    * Helper callback for uasort() to sort configuration entities by weight and label.
    */
   public static function sort(ConfigEntityInterface $a, ConfigEntityInterface $b) {
-    $a_weight = isset($a->weight) ? $a->weight : 0;
-    $b_weight = isset($b->weight) ? $b->weight : 0;
-    if ($a_weight == $b_weight) {
-      $a_label = $a->label();
-      $b_label = $b->label();
-      return strnatcasecmp($a_label, $b_label);
+    $entity_type = $a->getEntityType();
+    if ($entity_type->hasKey('weight')) {
+      $weight_key = $entity_type->getKey('weight');
+      $a_weight = isset($a->{$weight_key}) ? $a->{$weight_key} : 0;
+      $b_weight = isset($b->{$weight_key}) ? $b->{$weight_key} : 0;
     }
+    else {
+      $a_weight = $b_weight = 0;
+    }
+
+    if ($a_weight == $b_weight) {
+      return strnatcasecmp($a->label(), $b->label());
+    }
+
     return ($a_weight < $b_weight) ? -1 : 1;
   }
 
diff --git a/core/lib/Drupal/Core/Entity/Entity.php b/core/lib/Drupal/Core/Entity/Entity.php
index 2a4b199..3abb33e 100644
--- a/core/lib/Drupal/Core/Entity/Entity.php
+++ b/core/lib/Drupal/Core/Entity/Entity.php
@@ -99,7 +99,8 @@ protected function uuidGenerator() {
    * {@inheritdoc}
    */
   public function id() {
-    return isset($this->id) ? $this->id : NULL;
+    $id_key = $this->getEntityType()->getKey('id');
+    return isset($this->{$id_key}) ? $this->{$id_key} : NULL;
   }
 
   /**