diff --git a/Controller/ApiAttributeController.php b/Controller/ApiAttributeController.php
index 30b9a6d..aec55f4 100644
--- a/Controller/ApiAttributeController.php
+++ b/Controller/ApiAttributeController.php
@@ -45,7 +45,7 @@ final class ApiAttributeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -53,7 +53,7 @@ final class ApiAttributeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiLotAttributeCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiLotAttributeCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateLotAttributeCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
@@ -123,7 +123,7 @@ final class ApiAttributeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -131,7 +131,7 @@ final class ApiAttributeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiLotAttributeTypeL11nCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiLotAttributeTypeL11nCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateLotAttributeTypeL11nCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
@@ -192,7 +192,7 @@ final class ApiAttributeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -200,7 +200,7 @@ final class ApiAttributeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiLotAttributeTypeCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiLotAttributeTypeCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateLotAttributeTypeCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
@@ -262,7 +262,7 @@ final class ApiAttributeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -270,7 +270,7 @@ final class ApiAttributeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiLotAttributeValueCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiLotAttributeValueCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateLotAttributeValueCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
@@ -347,7 +347,7 @@ final class ApiAttributeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -355,7 +355,7 @@ final class ApiAttributeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiLotAttributeValueL11nCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiLotAttributeValueL11nCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateLotAttributeValueL11nCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
diff --git a/Controller/ApiStockTypeController.php b/Controller/ApiStockTypeController.php
index eb75381..2a32593 100644
--- a/Controller/ApiStockTypeController.php
+++ b/Controller/ApiStockTypeController.php
@@ -39,7 +39,7 @@ final class ApiStockTypeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -47,7 +47,7 @@ final class ApiStockTypeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiStockTypeCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiStockTypeCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateStockTypeCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
@@ -105,7 +105,7 @@ final class ApiStockTypeController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return void
      *
@@ -113,7 +113,7 @@ final class ApiStockTypeController extends Controller
      *
      * @since 1.0.0
      */
-    public function apiStockTypeL11nCreate(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
+    public function apiStockTypeL11nCreate(RequestAbstract $request, ResponseAbstract $response, array $data = []) : void
     {
         if (!empty($val = $this->validateStockTypeL11nCreate($request))) {
             $response->header->status = RequestStatusCode::R_400;
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 587a048..6c4ed8a 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -39,14 +39,14 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface Returns a renderable object
      *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewStockTypeList(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
+    public function viewStockTypeList(RequestAbstract $request, ResponseAbstract $response, array $data = []) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -81,14 +81,14 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface Returns a renderable object
      *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewStockList(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
+    public function viewStockList(RequestAbstract $request, ResponseAbstract $response, array $data = []) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -117,14 +117,14 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface Returns a renderable object
      *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewStock(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
+    public function viewStock(RequestAbstract $request, ResponseAbstract $response, array $data = []) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -141,14 +141,14 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface Returns a renderable object
      *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewStockType(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
+    public function viewStockType(RequestAbstract $request, ResponseAbstract $response, array $data = []) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -172,14 +172,14 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface Returns a renderable object
      *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewStockLocationList(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
+    public function viewStockLocationList(RequestAbstract $request, ResponseAbstract $response, array $data = []) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);
 
@@ -211,14 +211,14 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface Returns a renderable object
      *
      * @since 1.0.0
      * @codeCoverageIgnore
      */
-    public function viewStockLocation(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : RenderableInterface
+    public function viewStockLocation(RequestAbstract $request, ResponseAbstract $response, array $data = []) : RenderableInterface
     {
         $view = new View($this->app->l11nManager, $request, $response);