diff --git a/Models/AccountAbstract.php b/Models/AccountAbstract.php
index bef47fb..7ea3697 100755
--- a/Models/AccountAbstract.php
+++ b/Models/AccountAbstract.php
@@ -30,7 +30,7 @@ abstract class AccountAbstract
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Summary account.
@@ -46,7 +46,7 @@ abstract class AccountAbstract
      * @var int
      * @since 1.0.0
      */
-    protected int $type = AccountType::IMPERSONAL;
+    public int $type = AccountType::IMPERSONAL;
 
     /**
      * Entry list.
diff --git a/Models/Balance.php b/Models/Balance.php
index 2939b43..b6bfef4 100755
--- a/Models/Balance.php
+++ b/Models/Balance.php
@@ -30,7 +30,7 @@ class Balance
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Balance data.
diff --git a/Models/BalanceL11n.php b/Models/BalanceL11n.php
index 2c3c393..4756e8f 100755
--- a/Models/BalanceL11n.php
+++ b/Models/BalanceL11n.php
@@ -32,7 +32,7 @@ class BalanceL11n implements \JsonSerializable
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Balance ID.
diff --git a/Models/BatchPosting.php b/Models/BatchPosting.php
index 5f36638..d93885c 100755
--- a/Models/BatchPosting.php
+++ b/Models/BatchPosting.php
@@ -30,7 +30,7 @@ class BatchPosting implements \Countable
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Creator.
diff --git a/Models/CostCenter.php b/Models/CostCenter.php
index c18f8bd..908d68e 100755
--- a/Models/CostCenter.php
+++ b/Models/CostCenter.php
@@ -30,7 +30,7 @@ class CostCenter
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Code.
diff --git a/Models/CostCenterL11n.php b/Models/CostCenterL11n.php
index 9d0e756..57aa801 100755
--- a/Models/CostCenterL11n.php
+++ b/Models/CostCenterL11n.php
@@ -32,7 +32,7 @@ class CostCenterL11n implements \JsonSerializable
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * CostCenter ID.
diff --git a/Models/CostObject.php b/Models/CostObject.php
index 35eeb00..c9896fe 100755
--- a/Models/CostObject.php
+++ b/Models/CostObject.php
@@ -30,7 +30,7 @@ class CostObject
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Code.
diff --git a/Models/CostObjectL11n.php b/Models/CostObjectL11n.php
index f69bf29..6604e79 100755
--- a/Models/CostObjectL11n.php
+++ b/Models/CostObjectL11n.php
@@ -32,7 +32,7 @@ class CostObjectL11n implements \JsonSerializable
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * CostObject ID.
diff --git a/Models/Creditor.php b/Models/Creditor.php
index 94e84df..07a5e00 100755
--- a/Models/Creditor.php
+++ b/Models/Creditor.php
@@ -32,7 +32,7 @@ class Creditor
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Account.
diff --git a/Models/Debitor.php b/Models/Debitor.php
index 995ae9c..8372091 100755
--- a/Models/Debitor.php
+++ b/Models/Debitor.php
@@ -32,7 +32,7 @@ class Debitor
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Account.
diff --git a/Models/IncomeStatement.php b/Models/IncomeStatement.php
index dad8255..b2e9894 100755
--- a/Models/IncomeStatement.php
+++ b/Models/IncomeStatement.php
@@ -30,7 +30,7 @@ class IncomeStatement
      * @var int
      * @since 1.0.0
      */
-    protected int $id = 0;
+    public int $id = 0;
 
     /**
      * Date.
diff --git a/Theme/Backend/costcenter-list.tpl.php b/Theme/Backend/costcenter-list.tpl.php
index ef6538b..0bdd680 100755
--- a/Theme/Backend/costcenter-list.tpl.php
+++ b/Theme/Backend/costcenter-list.tpl.php
@@ -20,8 +20,8 @@ use phpOMS\Uri\UriFactory;
  */
 $costcenter = $this->getData('costcenter');
 
-$previous = empty($costcenter) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \reset($costcenter)->getId() . '&ptype=p';
-$next     = empty($costcenter) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \end($costcenter)->getId() . '&ptype=n';
+$previous = empty($costcenter) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \reset($costcenter)->id . '&ptype=p';
+$next     = empty($costcenter) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \end($costcenter)->id . '&ptype=n';
 
 echo $this->getData('nav')->render(); ?>
 <div class="row">
@@ -35,7 +35,7 @@ echo $this->getData('nav')->render(); ?>
                 <td class="wf-100"><?= $this->getHtml('Name'); ?>
             <tbody>
             <?php $count = 0; foreach ($costcenter as $key => $value) : ++$count;
-            $url         = UriFactory::build('{/base}/tag/single?{?}&id=' . $value->getId()); ?>
+            $url         = UriFactory::build('{/base}/tag/single?{?}&id=' . $value->id); ?>
                 <tr tabindex="0" data-href="<?= $url; ?>">
                     <td data-label="<?= $this->getHtml('Code'); ?>"><a href="<?= $url; ?>"><?= $this->printHtml($value->code); ?></a>
                     <td data-label="<?= $this->getHtml('Name'); ?>"><a href="<?= $url; ?>"><?= $this->printHtml($value->l11n->name); ?></a>
diff --git a/Theme/Backend/costobject-list.tpl.php b/Theme/Backend/costobject-list.tpl.php
index 45c8e13..d0f29dc 100755
--- a/Theme/Backend/costobject-list.tpl.php
+++ b/Theme/Backend/costobject-list.tpl.php
@@ -20,8 +20,8 @@ use phpOMS\Uri\UriFactory;
  */
 $costobject = $this->getData('costobject');
 
-$previous = empty($costobject) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \reset($costobject)->getId() . '&ptype=p';
-$next     = empty($costobject) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \end($costobject)->getId() . '&ptype=n';
+$previous = empty($costobject) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \reset($costobject)->id . '&ptype=p';
+$next     = empty($costobject) ? '{/base}/tag/list' : '{/base}/tag/list?{?}&id=' . \end($costobject)->id . '&ptype=n';
 
 echo $this->getData('nav')->render(); ?>
 <div class="row">
@@ -35,7 +35,7 @@ echo $this->getData('nav')->render(); ?>
                 <td class="wf-100"><?= $this->getHtml('Name'); ?>
             <tbody>
             <?php $count = 0; foreach ($costobject as $key => $value) : ++$count;
-            $url         = UriFactory::build('{/base}/tag/single?{?}&id=' . $value->getId()); ?>
+            $url         = UriFactory::build('{/base}/tag/single?{?}&id=' . $value->id); ?>
                 <tr tabindex="0" data-href="<?= $url; ?>">
                     <td data-label="<?= $this->getHtml('Code'); ?>"><a href="<?= $url; ?>"><?= $this->printHtml($value->code); ?></a>
                     <td data-label="<?= $this->getHtml('Name'); ?>"><a href="<?= $url; ?>"><?= $this->printHtml($value->l11n->name); ?></a>
diff --git a/Theme/Backend/gl-list.tpl.php b/Theme/Backend/gl-list.tpl.php
index 67a9f3b..168da4c 100755
--- a/Theme/Backend/gl-list.tpl.php
+++ b/Theme/Backend/gl-list.tpl.php
@@ -36,9 +36,9 @@ echo $this->getData('nav')->render(); ?>
                     <td class="wf-100"><?= $this->getHtml('Name'); ?>
                 <tbody>
                 <?php $c = 0; foreach ([] as $key => $value) : ++$c;
-                $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->getId()); ?>
+                $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->id); ?>
                 <tr>
-                    <td><a href="<?= $url; ?>"><?= $value->getId(); ?></a>
+                    <td><a href="<?= $url; ?>"><?= $value->id; ?></a>
                     <td><a href="<?= $url; ?>"><?= $this->printHtml($value->name); ?></a>
                     <td>
                     <td>
diff --git a/Theme/Backend/journal-list.tpl.php b/Theme/Backend/journal-list.tpl.php
index d93cae5..e114e10 100755
--- a/Theme/Backend/journal-list.tpl.php
+++ b/Theme/Backend/journal-list.tpl.php
@@ -34,9 +34,9 @@ echo $this->getData('nav')->render(); ?>
             <td class="wf-100"><?= $this->getHtml('Name'); ?>
         <tbody>
         <?php $c = 0; foreach ([] as $key => $value) : ++$c;
-        $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->getId()); ?>
+        $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->id); ?>
         <tr>
-            <td><a href="<?= $url; ?>"><?= $value->getId(); ?></a>
+            <td><a href="<?= $url; ?>"><?= $value->id; ?></a>
             <td><a href="<?= $url; ?>"><?= $this->printHtml($value->name); ?></a>
             <td>
             <td>
diff --git a/Theme/Backend/stack-archive-list.tpl.php b/Theme/Backend/stack-archive-list.tpl.php
index 2ce6e88..bd5e3eb 100755
--- a/Theme/Backend/stack-archive-list.tpl.php
+++ b/Theme/Backend/stack-archive-list.tpl.php
@@ -36,9 +36,9 @@ echo $this->getData('nav')->render(); ?>
             <td><?= $this->getHtml('Created'); ?>
         <tbody>
         <?php $c = 0; foreach ([] as $key => $value) : ++$c;
-        $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->getId()); ?>
+        $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->id); ?>
         <tr>
-            <td><a href="<?= $url; ?>"><?= $value->getId(); ?></a>
+            <td><a href="<?= $url; ?>"><?= $value->id; ?></a>
             <td><a href="<?= $url; ?>"><?= $this->printHtml($value->name); ?></a>
             <td>
             <td>
diff --git a/Theme/Backend/stack-list.tpl.php b/Theme/Backend/stack-list.tpl.php
index b5bd8ed..69b1eee 100755
--- a/Theme/Backend/stack-list.tpl.php
+++ b/Theme/Backend/stack-list.tpl.php
@@ -38,9 +38,9 @@ echo $this->getData('nav')->render(); ?>
                     <td><?= $this->getHtml('Created'); ?>
                 <tbody>
                 <?php $c = 0; foreach ([] as $key => $value) : ++$c;
-                $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->getId()); ?>
+                $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->id); ?>
                 <tr>
-                    <td><a href="<?= $url; ?>"><?= $value->getId(); ?></a>
+                    <td><a href="<?= $url; ?>"><?= $value->id; ?></a>
                     <td><a href="<?= $url; ?>"><?= $this->printHtml($value->name); ?></a>
                     <td>
                     <td>
diff --git a/Theme/Backend/stack-predefined-list.tpl.php b/Theme/Backend/stack-predefined-list.tpl.php
index 3b107f0..b760526 100755
--- a/Theme/Backend/stack-predefined-list.tpl.php
+++ b/Theme/Backend/stack-predefined-list.tpl.php
@@ -37,9 +37,9 @@ echo $this->getData('nav')->render(); ?>
             <td><?= $this->getHtml('Created'); ?>
         <tbody>
         <?php $c = 0; foreach ([] as $key => $value) : ++$c;
-        $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->getId()); ?>
+        $url     = \phpOMS\Uri\UriFactory::build('{/base}/admin/group/settings?{?}&id=' . $value->id); ?>
         <tr>
-            <td><a href="<?= $url; ?>"><?= $value->getId(); ?></a>
+            <td><a href="<?= $url; ?>"><?= $value->id; ?></a>
             <td><a href="<?= $url; ?>"><?= $this->printHtml($value->name); ?></a>
             <td>
             <td>
diff --git a/tests/Controller/Api/ApiControllerAccountTrait.php b/tests/Controller/Api/ApiControllerAccountTrait.php
index 203967b..10cf7d4 100755
--- a/tests/Controller/Api/ApiControllerAccountTrait.php
+++ b/tests/Controller/Api/ApiControllerAccountTrait.php
@@ -36,7 +36,7 @@ trait ApiControllerAccountTrait
         $this->module->apiAccountCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -70,7 +70,7 @@ trait ApiControllerAccountTrait
         $this->module->apiAccountUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
diff --git a/tests/Controller/Api/ApiControllerBatchEntryTrait.php b/tests/Controller/Api/ApiControllerBatchEntryTrait.php
index 9a189be..7472955 100755
--- a/tests/Controller/Api/ApiControllerBatchEntryTrait.php
+++ b/tests/Controller/Api/ApiControllerBatchEntryTrait.php
@@ -36,7 +36,7 @@ trait ApiControllerBatchEntryTrait
         $this->module->apiBatchEntryCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -70,7 +70,7 @@ trait ApiControllerBatchEntryTrait
         $this->module->apiBatchEntryUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -104,7 +104,7 @@ trait ApiControllerBatchEntryTrait
         $this->module->apiRecurringEntryCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -138,7 +138,7 @@ trait ApiControllerBatchEntryTrait
         $this->module->apiRecurringEntryUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
diff --git a/tests/Controller/Api/ApiControllerCostCenterTrait.php b/tests/Controller/Api/ApiControllerCostCenterTrait.php
index c760db8..4069cbe 100755
--- a/tests/Controller/Api/ApiControllerCostCenterTrait.php
+++ b/tests/Controller/Api/ApiControllerCostCenterTrait.php
@@ -36,7 +36,7 @@ trait ApiControllerCostCenterTrait
         $this->module->apiCostCenterCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -70,7 +70,7 @@ trait ApiControllerCostCenterTrait
         $this->module->apiCostCenterUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
diff --git a/tests/Controller/Api/ApiControllerCostObjectTrait.php b/tests/Controller/Api/ApiControllerCostObjectTrait.php
index ff4ab84..881a71b 100755
--- a/tests/Controller/Api/ApiControllerCostObjectTrait.php
+++ b/tests/Controller/Api/ApiControllerCostObjectTrait.php
@@ -36,7 +36,7 @@ trait ApiControllerCostObjectTrait
         $this->module->apiCostObjectCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -70,7 +70,7 @@ trait ApiControllerCostObjectTrait
         $this->module->apiCostObjectUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
diff --git a/tests/Controller/Api/ApiControllerEntryTrait.php b/tests/Controller/Api/ApiControllerEntryTrait.php
index 42f0888..5a15a0a 100755
--- a/tests/Controller/Api/ApiControllerEntryTrait.php
+++ b/tests/Controller/Api/ApiControllerEntryTrait.php
@@ -36,7 +36,7 @@ trait ApiControllerEntryTrait
         $this->module->apiEntryCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -70,7 +70,7 @@ trait ApiControllerEntryTrait
         $this->module->apiEntryUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
diff --git a/tests/Controller/Api/ApiControllerTaxKeyTrait.php b/tests/Controller/Api/ApiControllerTaxKeyTrait.php
index 2cd4131..71f4154 100755
--- a/tests/Controller/Api/ApiControllerTaxKeyTrait.php
+++ b/tests/Controller/Api/ApiControllerTaxKeyTrait.php
@@ -36,7 +36,7 @@ trait ApiControllerTaxKeyTrait
         $this->module->apiTaxKeyCreate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
@@ -70,7 +70,7 @@ trait ApiControllerTaxKeyTrait
         $this->module->apiTaxKeyUpdate($request, $response);
 
         self::assertTrue(true);
-        //self::assertGreaterThan(0, $response->get('')['response']->getId());
+        //self::assertGreaterThan(0, $response->get('')['response']->id);
     }
 
     /**
diff --git a/tests/Models/AccountAbstractTest.php b/tests/Models/AccountAbstractTest.php
index ebc7c85..2efdb1a 100755
--- a/tests/Models/AccountAbstractTest.php
+++ b/tests/Models/AccountAbstractTest.php
@@ -36,7 +36,7 @@ final class AccountAbstractTest extends \PHPUnit\Framework\TestCase
 
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->class->getId());
+        self::assertEquals(0, $this->class->id);
         self::assertNull($this->class->summaryAccount);
         self::assertNull($this->class->getEntryById(0));
         self::assertEquals([], $this->class->getEntriesByDate(new \DateTime()));
diff --git a/tests/Models/BalanceL11nTest.php b/tests/Models/BalanceL11nTest.php
index bd8fd17..68533b0 100755
--- a/tests/Models/BalanceL11nTest.php
+++ b/tests/Models/BalanceL11nTest.php
@@ -38,7 +38,7 @@ final class BalanceL11nTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->l11n->getId());
+        self::assertEquals(0, $this->l11n->id);
         self::assertEquals('', $this->l11n->name);
         self::assertEquals('', $this->l11n->description);
         self::assertEquals(0, $this->l11n->balance);
diff --git a/tests/Models/BalanceTest.php b/tests/Models/BalanceTest.php
index b9e9f0a..f2bc4f4 100755
--- a/tests/Models/BalanceTest.php
+++ b/tests/Models/BalanceTest.php
@@ -37,7 +37,7 @@ final class BalanceTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->balance->getId());
+        self::assertEquals(0, $this->balance->id);
     }
 
     /**
diff --git a/tests/Models/BatchPostingTest.php b/tests/Models/BatchPostingTest.php
index 27dafd4..c19e686 100755
--- a/tests/Models/BatchPostingTest.php
+++ b/tests/Models/BatchPostingTest.php
@@ -37,7 +37,7 @@ final class BatchPostingTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->batch->getId());
+        self::assertEquals(0, $this->batch->id);
         self::assertEquals(0, $this->batch->creator);
         self::assertEquals('', $this->batch->description);
         self::assertEquals(0, $this->batch->count());
diff --git a/tests/Models/CostCenterL11nTest.php b/tests/Models/CostCenterL11nTest.php
index ae7f7c0..b9c1ceb 100755
--- a/tests/Models/CostCenterL11nTest.php
+++ b/tests/Models/CostCenterL11nTest.php
@@ -38,7 +38,7 @@ final class CostCenterL11nTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->l11n->getId());
+        self::assertEquals(0, $this->l11n->id);
         self::assertEquals('', $this->l11n->name);
         self::assertEquals('', $this->l11n->description);
         self::assertEquals(0, $this->l11n->costcenter);
diff --git a/tests/Models/CostCenterMapperTest.php b/tests/Models/CostCenterMapperTest.php
index c256cd2..98a1188 100755
--- a/tests/Models/CostCenterMapperTest.php
+++ b/tests/Models/CostCenterMapperTest.php
@@ -35,10 +35,10 @@ final class CostCenterMapperTest extends \PHPUnit\Framework\TestCase
         $costcenter->l11n->description = 'Test description';
 
         $id = CostCenterMapper::create()->execute($costcenter);
-        self::assertGreaterThan(0, $costcenter->getId());
-        self::assertEquals($id, $costcenter->getId());
+        self::assertGreaterThan(0, $costcenter->id);
+        self::assertEquals($id, $costcenter->id);
 
-        $costcenterR = CostCenterMapper::get()->with('l11n')->where('l11n/language', ISO639x1Enum::_EN)->where('id', $costcenter->getId())->execute();
+        $costcenterR = CostCenterMapper::get()->with('l11n')->where('l11n/language', ISO639x1Enum::_EN)->where('id', $costcenter->id)->execute();
         self::assertEquals($costcenter->code, $costcenterR->code);
         self::assertEquals($costcenter->l11n->name, $costcenterR->l11n->name);
         self::assertEquals($costcenter->l11n->description, $costcenterR->l11n->description);
diff --git a/tests/Models/CostCenterTest.php b/tests/Models/CostCenterTest.php
index 2c45ff9..ed4b0de 100755
--- a/tests/Models/CostCenterTest.php
+++ b/tests/Models/CostCenterTest.php
@@ -37,7 +37,7 @@ final class CostCenterTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->cc->getId());
+        self::assertEquals(0, $this->cc->id);
         self::assertEquals('', $this->cc->code);
         self::assertNull($this->cc->parent);
     }
diff --git a/tests/Models/CostObjectL11nTest.php b/tests/Models/CostObjectL11nTest.php
index d039e1d..00a5c70 100755
--- a/tests/Models/CostObjectL11nTest.php
+++ b/tests/Models/CostObjectL11nTest.php
@@ -38,7 +38,7 @@ final class CostObjectL11nTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->l11n->getId());
+        self::assertEquals(0, $this->l11n->id);
         self::assertEquals('', $this->l11n->name);
         self::assertEquals('', $this->l11n->description);
         self::assertEquals(0, $this->l11n->costobject);
diff --git a/tests/Models/CostObjectMapperTest.php b/tests/Models/CostObjectMapperTest.php
index c617c67..080c950 100755
--- a/tests/Models/CostObjectMapperTest.php
+++ b/tests/Models/CostObjectMapperTest.php
@@ -35,10 +35,10 @@ final class CostObjectMapperTest extends \PHPUnit\Framework\TestCase
         $costobject->l11n->description = 'Test description';
 
         $id = CostObjectMapper::create()->execute($costobject);
-        self::assertGreaterThan(0, $costobject->getId());
-        self::assertEquals($id, $costobject->getId());
+        self::assertGreaterThan(0, $costobject->id);
+        self::assertEquals($id, $costobject->id);
 
-        $costobjectR = CostObjectMapper::get()->with('l11n')->where('l11n/language', ISO639x1Enum::_EN)->where('id', $costobject->getId())->execute();
+        $costobjectR = CostObjectMapper::get()->with('l11n')->where('l11n/language', ISO639x1Enum::_EN)->where('id', $costobject->id)->execute();
         self::assertEquals($costobject->code, $costobjectR->code);
         self::assertEquals($costobject->l11n->name, $costobjectR->l11n->name);
         self::assertEquals($costobject->l11n->description, $costobjectR->l11n->description);
diff --git a/tests/Models/CostObjectTest.php b/tests/Models/CostObjectTest.php
index 0d0b1c2..2d3404c 100755
--- a/tests/Models/CostObjectTest.php
+++ b/tests/Models/CostObjectTest.php
@@ -37,7 +37,7 @@ final class CostObjectTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->co->getId());
+        self::assertEquals(0, $this->co->id);
         self::assertEquals('', $this->co->code);
         self::assertNull($this->co->parent);
     }
diff --git a/tests/Models/CreditorTest.php b/tests/Models/CreditorTest.php
index 1d88090..8502f96 100755
--- a/tests/Models/CreditorTest.php
+++ b/tests/Models/CreditorTest.php
@@ -37,7 +37,7 @@ final class CreditorTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->creditor->getId());
+        self::assertEquals(0, $this->creditor->id);
     }
 
     /**
diff --git a/tests/Models/DebitorTest.php b/tests/Models/DebitorTest.php
index a03490e..9440b45 100755
--- a/tests/Models/DebitorTest.php
+++ b/tests/Models/DebitorTest.php
@@ -37,7 +37,7 @@ final class DebitorTest extends \PHPUnit\Framework\TestCase
      */
     public function testDefault() : void
     {
-        self::assertEquals(0, $this->debitor->getId());
+        self::assertEquals(0, $this->debitor->id);
     }
 
     /**
diff --git a/tests/Models/NullCostCenterTest.php b/tests/Models/NullCostCenterTest.php
index 4166a97..279ba30 100755
--- a/tests/Models/NullCostCenterTest.php
+++ b/tests/Models/NullCostCenterTest.php
@@ -37,6 +37,6 @@ final class NullCostCenterTest extends \PHPUnit\Framework\TestCase
     public function testId() : void
     {
         $null = new NullCostCenter(2);
-        self::assertEquals(2, $null->getId());
+        self::assertEquals(2, $null->id);
     }
 }
diff --git a/tests/Models/NullCostObjectTest.php b/tests/Models/NullCostObjectTest.php
index c5f71b9..5092327 100755
--- a/tests/Models/NullCostObjectTest.php
+++ b/tests/Models/NullCostObjectTest.php
@@ -37,6 +37,6 @@ final class NullCostObjectTest extends \PHPUnit\Framework\TestCase
     public function testId() : void
     {
         $null = new NullCostObject(2);
-        self::assertEquals(2, $null->getId());
+        self::assertEquals(2, $null->id);
     }
 }