diff --git a/Models/CostCenterL11nMapper.php b/Models/CostCenterL11nMapper.php
index 7fa63d8..60e5af2 100755
--- a/Models/CostCenterL11nMapper.php
+++ b/Models/CostCenterL11nMapper.php
@@ -15,6 +15,7 @@ declare(strict_types=1);
 namespace Modules\Accounting\Models;
 
 use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
+use phpOMS\Localization\BaseStringL11n;
 
 /**
  * CostCenter mapper class.
diff --git a/Models/CostObjectL11nMapper.php b/Models/CostObjectL11nMapper.php
index 82bec62..38fd829 100755
--- a/Models/CostObjectL11nMapper.php
+++ b/Models/CostObjectL11nMapper.php
@@ -15,6 +15,7 @@ declare(strict_types=1);
 namespace Modules\Accounting\Models;
 
 use phpOMS\DataStorage\Database\Mapper\DataMapperFactory;
+use phpOMS\Localization\BaseStringL11n;
 
 /**
  * CostObject mapper class.
diff --git a/Models/IncomeStatement.php b/Models/IncomeStatement.php
index d4ea364..d3a3982 100755
--- a/Models/IncomeStatement.php
+++ b/Models/IncomeStatement.php
@@ -38,7 +38,7 @@ class IncomeStatement
      * @var null|\DateTime
      * @since 1.0.0
      */
-    private ?\DateTime $date = null;
+    public ?\DateTime $date = null;
 
     /**
      * Income statement structure.
@@ -46,5 +46,5 @@ class IncomeStatement
      * @var array
      * @since 1.0.0
      */
-    private array $incomeStatement = [];
+    public array $incomeStatement = [];
 }