diff --git a/Admin/Routes/Web/Api.php b/Admin/Routes/Web/Api.php
index c359c52..06d8967 100755
--- a/Admin/Routes/Web/Api.php
+++ b/Admin/Routes/Web/Api.php
@@ -23,6 +23,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiDocCreate',
             'verb'       => RouteVerb::PUT,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::CREATE,
@@ -33,6 +34,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiDocUpdate',
             'verb'       => RouteVerb::SET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::MODIFY,
@@ -43,6 +45,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiDocGet',
             'verb'       => RouteVerb::GET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::READ,
@@ -53,6 +56,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiDocDelete',
             'verb'       => RouteVerb::DELETE,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::DELETE,
@@ -66,6 +70,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiCategoryCreate',
             'verb'       => RouteVerb::PUT,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::CREATE,
@@ -76,6 +81,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiCategoryUpdate',
             'verb'       => RouteVerb::SET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::MODIFY,
@@ -86,6 +92,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiCategoryGet',
             'verb'       => RouteVerb::GET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::READ,
@@ -96,6 +103,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiCategoryDelete',
             'verb'       => RouteVerb::DELETE,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::DELETE,
@@ -109,6 +117,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiAppCreate',
             'verb'       => RouteVerb::PUT,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::CREATE,
@@ -119,6 +128,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiAppUpdate',
             'verb'       => RouteVerb::SET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::MODIFY,
@@ -129,6 +139,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiAppGet',
             'verb'       => RouteVerb::GET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::READ,
@@ -139,6 +150,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiAppDelete',
             'verb'       => RouteVerb::DELETE,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::DELETE,
@@ -152,6 +164,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiCategoryL11nCreate',
             'verb'       => RouteVerb::PUT,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::READ,
@@ -162,6 +175,7 @@ return [
             'dest'       => '\Modules\Knowledgebase\Controller\ApiController:apiWikiCategoryL11nUpdate',
             'verb'       => RouteVerb::SET,
             'csrf'       => true,
+            'active' => true,
             'permission' => [
                 'module' => ApiController::NAME,
                 'type'   => PermissionType::READ,
diff --git a/Admin/Routes/Web/Backend.php b/Admin/Routes/Web/Backend.php
index 2b794e9..157d564 100755
--- a/Admin/Routes/Web/Backend.php
+++ b/Admin/Routes/Web/Backend.php
@@ -22,6 +22,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:setUpBackend',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -33,6 +34,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseDashboard',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -45,6 +47,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseCategoryList',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -56,6 +59,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseCategory',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -67,6 +71,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseCategoryCreate',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::CREATE,
@@ -79,6 +84,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseDoc',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -90,6 +96,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseDocCreate',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::CREATE,
@@ -101,6 +108,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseDocEdit',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::MODIFY,
@@ -112,6 +120,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseDocList',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -124,6 +133,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseAppList',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -135,6 +145,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseApp',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::READ,
@@ -146,6 +157,7 @@ return [
         [
             'dest'       => '\Modules\Knowledgebase\Controller\BackendController:viewKnowledgebaseAppCreate',
             'verb'       => RouteVerb::GET,
+            'active' => true,
             'permission' => [
                 'module' => BackendController::NAME,
                 'type'   => PermissionType::CREATE,
diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 72ed549..d0e2e3b 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -287,7 +287,7 @@ final class ApiController extends Controller
     }
 
     /**
-     * Validate tag l11n create request
+     * Validate category l11n create request
      *
      * @param RequestAbstract $request Request
      *
@@ -308,7 +308,7 @@ final class ApiController extends Controller
     }
 
     /**
-     * Api method to create tag localization
+     * Api method to create category localization
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
@@ -335,7 +335,7 @@ final class ApiController extends Controller
     }
 
     /**
-     * Method to create tag localization from request.
+     * Method to create category localization from request.
      *
      * @param RequestAbstract $request Request
      *
@@ -790,8 +790,6 @@ final class ApiController extends Controller
      *
      * @return BaseStringL11n
      *
-     * @todo Implement API update function
-     *
      * @since 1.0.0
      */
     public function updateCategoryL11nFromRequest(RequestAbstract $request, BaseStringL11n $new) : BaseStringL11n
@@ -809,14 +807,15 @@ final class ApiController extends Controller
      *
      * @return array<string, bool>
      *
-     * @todo Implement API validation function
-     *
      * @since 1.0.0
      */
     private function validateCategoryL11nUpdate(RequestAbstract $request) : array
     {
         $val = [];
-        if (($val['id'] = !$request->hasData('id'))) {
+        if (($val['id'] = !$request->hasData('id'))
+            || (($val['title'] = !$request->hasData('title'))
+                && ($val['language'] = !$request->hasData('language')))
+        ) {
             return $val;
         }
 
diff --git a/Models/WikiAppMapper.php b/Models/WikiAppMapper.php
index 9623ef0..d1f7315 100755
--- a/Models/WikiAppMapper.php
+++ b/Models/WikiAppMapper.php
@@ -17,7 +17,7 @@ namespace Modules\Knowledgebase\Models;
 use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
 
 /**
- * Mapper class.
+ * WikiApp mapper class.
  *
  * @package Modules\Knowledgebase\Models
  * @license OMS License 2.0
diff --git a/Models/WikiCategoryMapper.php b/Models/WikiCategoryMapper.php
index 3fbfdd1..fc15be5 100755
--- a/Models/WikiCategoryMapper.php
+++ b/Models/WikiCategoryMapper.php
@@ -17,7 +17,7 @@ namespace Modules\Knowledgebase\Models;
 use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
 
 /**
- * Mapper class.
+ * WikiCategory mapper class.
  *
  * @package Modules\Knowledgebase\Models
  * @license OMS License 2.0
diff --git a/Models/WikiDocHistoryMapper.php b/Models/WikiDocHistoryMapper.php
index 2f83020..f42d16d 100755
--- a/Models/WikiDocHistoryMapper.php
+++ b/Models/WikiDocHistoryMapper.php
@@ -18,7 +18,7 @@ use Modules\Admin\Models\AccountMapper;
 use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
 
 /**
- * Mapper class.
+ * WikiDocHistory mapper class.
  *
  * @package Modules\Knowledgebase\Models
  * @license OMS License 2.0
diff --git a/Models/WikiDocMapper.php b/Models/WikiDocMapper.php
index 1d6a6fd..0a1ce0f 100755
--- a/Models/WikiDocMapper.php
+++ b/Models/WikiDocMapper.php
@@ -20,7 +20,7 @@ use Modules\Tag\Models\TagMapper;
 use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
 
 /**
- * Mapper class.
+ * WikiDoc mapper class.
  *
  * @package Modules\Knowledgebase\Models
  * @license OMS License 2.0