diff --git a/Controller/ApiController.php b/Controller/ApiController.php
new file mode 100644
index 0000000..523c306
--- /dev/null
+++ b/Controller/ApiController.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.2
+ *
+ * @package    Modules\Auditor
+ * @copyright  Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://website.orange-management.de
+ */
+declare(strict_types=1);
+
+namespace Modules\Auditor\Controller;
+
+use phpOMS\Message\Http\RequestStatusCode;
+use phpOMS\Message\RequestAbstract;
+use phpOMS\Message\ResponseAbstract;
+use phpOMS\Message\NotificationLevel;
+use phpOMS\Module\ModuleAbstract;
+use phpOMS\Views\View;
+use phpOMS\Account\PermissionType;
+use phpOMS\DataStorage\Database\RelationType;
+
+final class ApiController extends Controller
+{
+}
\ No newline at end of file
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index befd0ed..6d49d96 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -33,7 +33,7 @@ use Modules\Auditor\Models\Audit;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class BackendController extends Controller
+final class BackendController extends Controller
 {
     /**
      * @param RequestAbstract  $request  Request
diff --git a/Models/Audit.php b/Models/Audit.php
index cb65fde..cb6a8e1 100644
--- a/Models/Audit.php
+++ b/Models/Audit.php
@@ -14,7 +14,9 @@ declare(strict_types=1);
 
 namespace Modules\Auditor\Models;
 
-class Audit
+use phpOMS\Account\Account;
+
+final class Audit
 {
     private $id = 0;
 
@@ -36,86 +38,53 @@ class Audit
 
     private $createdAt = null;
 
-    public function __construct()
-    {
+    public function __construct(
+        Account $account,
+        string $old,
+        string $new,
+        int $type = 0,
+        int $subtype = 0,
+        string $module = null,
+        string $content = null
+    ) {
         $this->createdAt = new \DateTime('now');
     }
 
-    public function setType(int $type) : void
-    {
-        $this->type = $type;
-    }
-
     public function getType() : int
     {
         return $this->type;
     }
 
-    public function setSubType(int $subtype) : void
-    {
-        $this->subtype = $subtype;
-    }
-
     public function getSubType() : int
     {
         return $this->subtype;
     }
 
-    public function setModule(int $module) : void
-    {
-        $this->module = $module;
-    }
-
     public function getModule() : int
     {
         return $this->module;
     }
 
-    public function setRef(string $ref) : void
-    {
-        $this->ref = $ref;
-    }
-
     public function getRef() : string
     {
         return $this->ref;
     }
 
-    public function setContent(string $content) : void
-    {
-        $this->content = $content;
-    }
-
     public function getContent() : string
     {
         return $this->content;
     }
 
-    public function setOld(string $old) : void
-    {
-        $this->old = $old;
-    }
-
     public function getOld() : string
     {
         return $this->old;
     }
 
-    public function setNew(string $new) : void
-    {
-        $this->new = $new;
-    }
-
     public function getNew() : string
     {
         return $this->new;
     }
 
-    public function setCreatedBy($createdBy) : void
-    {
-        $this->createdBy = $createdBy;
-    }
-
     public function getCreatedBy()
     {
         return $this->createdBy;
diff --git a/Models/AuditMapper.php b/Models/AuditMapper.php
index ef03b05..a3a86b6 100644
--- a/Models/AuditMapper.php
+++ b/Models/AuditMapper.php
@@ -28,7 +28,7 @@ use phpOMS\DataStorage\Database\RelationType;
  * @link       http://website.orange-management.de
  * @since      1.0.0
  */
-class AuditMapper extends DataMapperAbstract
+final class AuditMapper extends DataMapperAbstract
 {
 
     /**