diff --git a/Controller/ApiTraitController.php b/Controller/ApiAttributeTraitController.php
similarity index 99%
rename from Controller/ApiTraitController.php
rename to Controller/ApiAttributeTraitController.php
index ed01d89..d9a158c 100644
--- a/Controller/ApiTraitController.php
+++ b/Controller/ApiAttributeTraitController.php
@@ -24,7 +24,7 @@ use phpOMS\Localization\BaseStringL11n;
 use phpOMS\Localization\ISO639x1Enum;
 use phpOMS\Message\RequestAbstract;
 
-trait ApiTraitController
+trait ApiAttributeTraitController
 {
     /**
      * Method to create item attribute from request.
diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 7bfdaa8..28508c8 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -27,7 +27,6 @@ use Modules\Attribute\Models\NullAttributeValue;
 use phpOMS\Localization\BaseStringL11n;
 use phpOMS\Localization\ISO639x1Enum;
 use phpOMS\Message\Http\RequestStatusCode;
-use phpOMS\Message\NotificationLevel;
 use phpOMS\Message\RequestAbstract;
 use phpOMS\Message\ResponseAbstract;
 use phpOMS\Model\Message\FormValidation;
@@ -58,8 +57,8 @@ final class ApiController extends Controller
     public function apiAttributeCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateAttributeCreate($request))) {
-            $response->data['attribute_create'] = new FormValidation($val);
-            $response->header->status           = RequestStatusCode::R_400;
+            $response->header->status = RequestStatusCode::R_400;
+            $this->createInvalidCreateResponse($request, $response, $val);
 
             return;
         }
@@ -67,7 +66,8 @@ final class ApiController extends Controller
         $attribute = $this->createAttributeFromRequest($request);
         $this->createModel($request->header->account, $attribute, AttributeMapper::class, 'attribute', $request->getOrigin());
 
-        $this->fillJsonResponse($request, $response, NotificationLevel::OK, 'Attribute', 'Attribute successfully created', $attribute);
+        $response->header->status = RequestStatusCode::R_400;
+        $this->createStandardCreateResponse($request, $response, $attribute);
     }
 
     /**
@@ -137,15 +137,15 @@ final class ApiController extends Controller
     public function apiAttributeTypeL11nCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateAttributeTypeL11nCreate($request))) {
-            $response->data['attr_type_l11n_create'] = new FormValidation($val);
-            $response->header->status                = RequestStatusCode::R_400;
+            $response->header->status = RequestStatusCode::R_400;
+            $this->createInvalidCreateResponse($request, $response, $val);
 
             return;
         }
 
         $attrL11n = $this->createAttributeTypeL11nFromRequest($request);
         $this->createModel($request->header->account, $attrL11n, AttributeTypeL11nMapper::class, 'attr_type_l11n', $request->getOrigin());
-        $this->fillJsonResponse($request, $response, NotificationLevel::OK, 'Localization', 'Localization successfully created', $attrL11n);
+        $this->createStandardCreateResponse($request, $response, $attrL11n);
     }
 
     /**
@@ -206,16 +206,15 @@ final class ApiController extends Controller
     public function apiAttributeTypeCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateAttributeTypeCreate($request))) {
-            $response->data['attr_type_create'] = new FormValidation($val);
-            $response->header->status           = RequestStatusCode::R_400;
+            $response->header->status = RequestStatusCode::R_400;
+            $this->createInvalidCreateResponse($request, $response, $val);
 
             return;
         }
 
         $attrType = $this->createAttributeTypeFromRequest($request);
         $this->createModel($request->header->account, $attrType, AttributeTypeMapper::class, 'attr_type', $request->getOrigin());
-
-        $this->fillJsonResponse($request, $response, NotificationLevel::OK, 'Attribute type', 'Attribute type successfully created', $attrType);
+        $this->createStandardCreateResponse($request, $response, $attrType);
     }
 
     /**
@@ -232,7 +231,7 @@ final class ApiController extends Controller
         $attrType                    = new AttributeType($request->getDataString('name') ?? '');
         $attrType->datatype          = $request->getDataInt('datatype') ?? 0;
         $attrType->custom            = $request->getDataBool('custom') ?? false;
-        $attrType->isRequired        = (bool) ($request->getData('is_required') ?? false);
+        $attrType->isRequired        = $request->getDataBool('is_required') ?? false;
         $attrType->validationPattern = $request->getDataString('validation_pattern') ?? '';
         $attrType->setL11n($request->getDataString('title') ?? '', $request->getDataString('language') ?? ISO639x1Enum::_EN);
         $attrType->setFields($request->getDataInt('fields') ?? 0);
@@ -277,8 +276,8 @@ final class ApiController extends Controller
     public function apiAttributeValueCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateAttributeValueCreate($request))) {
-            $response->data['attr_value_create'] = new FormValidation($val);
-            $response->header->status            = RequestStatusCode::R_400;
+            $response->header->status = RequestStatusCode::R_400;
+            $this->createInvalidCreateResponse($request, $response, $val);
 
             return;
         }
@@ -295,7 +294,7 @@ final class ApiController extends Controller
             );
         }
 
-        $this->fillJsonResponse($request, $response, NotificationLevel::OK, 'Attribute value', 'Attribute value successfully created', $attrValue);
+        $this->createStandardCreateResponse($request, $response, $attrValue);
     }
 
     /**
@@ -362,15 +361,15 @@ final class ApiController extends Controller
     public function apiAttributeValueL11nCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         if (!empty($val = $this->validateAttributeValueL11nCreate($request))) {
-            $response->data['attr_value_l11n_create'] = new FormValidation($val);
-            $response->header->status                 = RequestStatusCode::R_400;
+            $response->header->status = RequestStatusCode::R_400;
+            $this->createInvalidCreateResponse($request, $response, $val);
 
             return;
         }
 
         $attrL11n = $this->createAttributeValueL11nFromRequest($request);
         $this->createModel($request->header->account, $attrL11n, AttributeValueL11nMapper::class, 'attr_value_l11n', $request->getOrigin());
-        $this->fillJsonResponse($request, $response, NotificationLevel::OK, 'Localization', 'Localization successfully created', $attrL11n);
+        $this->createStandardCreateResponse($request, $response, $attrL11n);
     }
 
     /**
diff --git a/Controller/ApiLocalizationTraitController.php b/Controller/ApiLocalizationTraitController.php
new file mode 100644
index 0000000..3d0aa3d
--- /dev/null
+++ b/Controller/ApiLocalizationTraitController.php
@@ -0,0 +1,183 @@
+<?php
+/**
+ * Jingga
+ *
+ * PHP Version 8.1
+ *
+ * @package   Modules\
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace Modules\Attribute\Controller;
+
+use phpOMS\Localization\BaseStringL11n;
+use phpOMS\Localization\BaseStringL11nType;
+use phpOMS\Localization\NullBaseStringL11nType;
+use phpOMS\Message\RequestAbstract;
+
+trait ApiLocalizationTraitController
+{
+    /**
+     * Method to create l11n from request.
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return BaseStringL11n
+     *
+     * @since 1.0.0
+     */
+    private function createL11nFromRequest(RequestAbstract $request) : BaseStringL11n
+    {
+        $l11n       = new BaseStringL11n();
+        $l11n->ref  = $request->getDataInt('ref') ?? 0;
+        $l11n->type = new NullBaseStringL11nType($request->getDataInt('type') ?? 0);
+        $l11n->setLanguage(
+            $request->getDataString('language') ?? $request->header->l11n->language
+        );
+        $l11n->content = $request->getDataString('content') ?? '';
+
+        return $l11n;
+    }
+
+    /**
+     * Validate l11n create request
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return array<string, bool>
+     *
+     * @since 1.0.0
+     */
+    private function validateL11nCreate(RequestAbstract $request) : array
+    {
+        $val = [];
+        if (($val['ref'] = !$request->hasData('ref'))
+            || ($val['type'] = !$request->hasData('type'))
+            || ($val['content'] = !$request->hasData('content'))
+        ) {
+            return $val;
+        }
+
+        return [];
+    }
+
+    /**
+     * Method to update L11n from request.
+     *
+     * @param RequestAbstract  $request Request
+     * @param BaseStringL11n     $new     Model to modify
+     *
+     * @return BaseStringL11n
+     *
+     * @todo: consider to move all these FromRequest functions to the attribute module since they are the same in every module!
+     *
+     * @since 1.0.0
+     */
+    public function updateL11nFromRequest(RequestAbstract $request, BaseStringL11n $new) : BaseStringL11n
+    {
+        $new->setLanguage(
+            $request->getDataString('language') ?? $new->language
+        );
+        $new->content = $request->getDataString('content') ?? $new->content;
+
+        return $new;
+    }
+
+    /**
+     * Validate L11n update request
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return array<string, bool>
+     *
+     * @todo: implement
+     *
+     * @since 1.0.0
+     */
+    private function validateL11nUpdate(RequestAbstract $request) : array
+    {
+        $val = [];
+        if (($val['id'] = !$request->hasData('id'))) {
+            return $val;
+        }
+
+        return [];
+    }
+
+    /**
+     * Method to create l11n type from request.
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return BaseStringL11nType
+     *
+     * @since 1.0.0
+     */
+    private function createL11nTypeFromRequest(RequestAbstract $request) : BaseStringL11nType
+    {
+        $l11nType             = new BaseStringL11nType();
+        $l11nType->title      = $request->getDataString('title') ?? '';
+        $l11nType->isRequired = $request->getDataBool('is_required') ?? false;
+
+        return $l11nType;
+    }
+
+    /**
+     * Validate l11n type create request
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return array<string, bool>
+     *
+     * @since 1.0.0
+     */
+    private function validateL11nTypeCreate(RequestAbstract $request) : array
+    {
+        $val = [];
+        if (($val['title'] = !$request->hasData('title'))) {
+            return $val;
+        }
+
+        return [];
+    }
+
+    /**
+     * Method to update l11n type from request.
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return BaseStringL11nType
+     *
+     * @since 1.0.0
+     */
+    private function updateL11nTypeFromRequest(RequestAbstract $request, BaseStringL11nType $new) : BaseStringL11nType
+    {
+        $new->title      = $request->getDataString('title') ?? $new->title;
+        $new->isRequired = $request->getDataBool('is_required') ?? $new->isRequired;
+
+        return $new;
+    }
+
+    /**
+     * Validate l11n type update request
+     *
+     * @param RequestAbstract $request Request
+     *
+     * @return array<string, bool>
+     *
+     * @since 1.0.0
+     */
+    private function validateL11nTypeUpdate(RequestAbstract $request) : array
+    {
+        $val = [];
+        if (($val['id'] = !$request->hasData('id'))) {
+            return $val;
+        }
+
+        return [];
+    }
+}
diff --git a/Models/Attribute.php.out b/Models/Attribute.php.out
deleted file mode 100644
index 823a5c2..0000000
--- a/Models/Attribute.php.out
+++ /dev/null
@@ -1,121 +0,0 @@
-<?php
-/**
- * Karaka
- *
- * PHP Version 8.1
- *
- * @package   Modules\Attribute\Models
- * @copyright Dennis Eichhorn
- * @license   OMS License 2.0
- * @version   1.0.0
- * @link      https://jingga.app
- */
-declare(strict_types=1);
-
-namespace Modules\Attribute\Models;
-
-/**
- * Attribute class.
- *
- * @package Modules\Attribute\Models
- * @license OMS License 2.0
- * @link    https://jingga.app
- * @since   1.0.0
- */
-class Attribute implements \JsonSerializable
-{
-    /**
-     * Id.
-     *
-     * @var int
-     * @since 1.0.0
-     */
-    public int $id = 0;
-
-    /**
-     *  this attribute belongs to
-     *
-     * @var int
-     * @since 1.0.0
-     */
-    public int $ref = 0;
-
-    /**
-     * Attribute type the attribute belongs to.
-     *
-     * @var AttributeType
-     * @since 1.0.0
-     */
-    public AttributeType $type;
-
-    /**
-     * Attribute value the attribute belongs to.
-     *
-     * @var AttributeValue
-     * @since 1.0.0
-     */
-    public AttributeValue $value;
-
-    /**
-     * Constructor.
-     *
-     * @since 1.0.0
-     */
-    public function __construct()
-    {
-        $this->type  = new NullAttributeType();
-        $this->value = new NullAttributeValue();
-    }
-
-    /**
-     * Creates a deep clone of the object.
-     *
-     * @return self
-     *
-     * @since 1.0.0
-     */
-    public function deepClone() : self
-    {
-        $clone = clone $this;
-        $clone->value = clone $this->value;
-
-        return $clone;
-    }
-
-    /**
-     * Returns the id of the attribute.
-     *
-     * @return int
-     *
-     * @since 1.0.0
-     */
-    public function getId() : int
-    {
-        return $this->id;
-    }
-
-    /**
-     * Converts the attribute to an array.
-     *
-     * @return array
-     *
-     * @since 1.0.0
-     */
-    public function toArray() : array
-    {
-        return [
-            'id'    => $this->id,
-            'ref'  => $this->ref,
-            'type'  => $this->type,
-            'value' => $this->value,
-        ];
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function jsonSerialize() : mixed
-    {
-        return $this->toArray();
-    }
-}