diff --git a/Controller/Controller.php b/Controller/Controller.php
index 422f73a..f984fd5 100644
--- a/Controller/Controller.php
+++ b/Controller/Controller.php
@@ -15,7 +15,6 @@ declare(strict_types=1);
 namespace Modules\Accounting\Controller;
 
 use phpOMS\Module\ModuleAbstract;
-use phpOMS\Module\WebInterface;
 
 /**
  * Controller class.
diff --git a/Models/L11nCostCenterMapper.php b/Models/L11nCostCenterMapper.php
index 442370a..58141d9 100644
--- a/Models/L11nCostCenterMapper.php
+++ b/Models/L11nCostCenterMapper.php
@@ -24,8 +24,6 @@ use phpOMS\Localization\Defaults\LanguageMapper;
  * @license OMS License 1.0
  * @link    https://orange-management.org
  * @since   1.0.0
- *
- * @todo Do I really want to create a relation to the language mapper? It's not really needed right?
  */
 final class L11nCostCenterMapper extends DataMapperAbstract
 {
@@ -43,22 +41,6 @@ final class L11nCostCenterMapper extends DataMapperAbstract
         'accounting_costcenter_l11n_language'        => ['name' => 'accounting_costcenter_l11n_language', 'type' => 'string', 'internal' => 'language'],
     ];
 
-    /**
-     * Has one relation.
-     *
-     * @var array<string, array{mapper:string, external:string, by?:string, column?:string, conditional?:bool}>
-     * @since 1.0.0
-     */
-    protected static array $ownsOne = [
-        'language' => [
-            'mapper'            => LanguageMapper::class,
-            'external'          => 'accounting_costcenter_l11n_language',
-            'by'                => 'code2',
-            'column'            => 'code2',
-            'conditional'       => true,
-        ],
-    ];
-
     /**
      * Primary table.
      *
diff --git a/Models/L11nCostObjectMapper.php b/Models/L11nCostObjectMapper.php
index 54098ce..64dd78f 100644
--- a/Models/L11nCostObjectMapper.php
+++ b/Models/L11nCostObjectMapper.php
@@ -24,8 +24,6 @@ use phpOMS\Localization\Defaults\LanguageMapper;
  * @license OMS License 1.0
  * @link    https://orange-management.org
  * @since   1.0.0
- *
- * @todo Do I really want to create a relation to the language mapper? It's not really needed right?
  */
 final class L11nCostObjectMapper extends DataMapperAbstract
 {
@@ -43,22 +41,6 @@ final class L11nCostObjectMapper extends DataMapperAbstract
         'accounting_costobject_l11n_language'        => ['name' => 'accounting_costobject_l11n_language', 'type' => 'string', 'internal' => 'language'],
     ];
 
-    /**
-     * Has one relation.
-     *
-     * @var array<string, array{mapper:string, external:string, by?:string, column?:string, conditional?:bool}>
-     * @since 1.0.0
-     */
-    protected static array $ownsOne = [
-        'language' => [
-            'mapper'            => LanguageMapper::class,
-            'external'          => 'accounting_costobject_l11n_language',
-            'by'                => 'code2',
-            'column'            => 'code2',
-            'conditional'       => true,
-        ],
-    ];
-
     /**
      * Primary table.
      *