diff --git a/application/src/Entity/Meta/Right.php b/application/src/Entity/Meta/Right.php
index 82458e9..6514bd9 100644
--- a/application/src/Entity/Meta/Right.php
+++ b/application/src/Entity/Meta/Right.php
@@ -16,7 +16,7 @@ use App\Entity\Attribut\LayerAttribut;
 use App\Entity\Attribut\RelationAttribut;
 use App\Entity\Attribut\PriorityAttribut;
 use App\Entity\Source\SourceInterface;
-use App\Exception\NoValidChoice;
+use App\Exception\NoValidChoiceException;
 
 /**
  * @author kevinfrantz
@@ -100,7 +100,7 @@ class Right extends AbstractMeta implements RightInterface
     public function setType(string $type): void
     {
         if (!array_key_exists($type, RightType::getChoices())) {
-            throw new NoValidChoice();
+            throw new NoValidChoiceException();
         }
         $this->type = $type;
     }
@@ -108,7 +108,7 @@ class Right extends AbstractMeta implements RightInterface
     public function setLayer(string $layer): void
     {
         if (!array_key_exists($layer, LayerType::getChoices())) {
-            throw new NoValidChoice();
+            throw new NoValidChoiceException();
         }
         $this->layer = $layer;
     }
diff --git a/application/src/Exception/AllreadySetException.php b/application/src/Exception/AllreadySetException.php
new file mode 100644
index 0000000..7c7ea3c
--- /dev/null
+++ b/application/src/Exception/AllreadySetException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Exception;
+
+use Symfony\Component\HttpKernel\Exception\ConflictHttpException;
+
+final class AllreadySetException extends ConflictHttpException
+{
+}
diff --git a/application/src/Exception/NoValidChoice.php b/application/src/Exception/NoValidChoice.php
deleted file mode 100644
index 156f67b..0000000
--- a/application/src/Exception/NoValidChoice.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-
-namespace App\Exception;
-
-class NoValidChoice extends \Exception
-{
-}
diff --git a/application/src/Exception/NoValidChoiceException.php b/application/src/Exception/NoValidChoiceException.php
new file mode 100644
index 0000000..b1f8d25
--- /dev/null
+++ b/application/src/Exception/NoValidChoiceException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace App\Exception;
+
+final class NoValidChoiceException extends \Exception
+{
+}
diff --git a/application/src/Exception/NotDefinedException.php b/application/src/Exception/NotDefinedException.php
index 60ed320..4addca0 100644
--- a/application/src/Exception/NotDefinedException.php
+++ b/application/src/Exception/NotDefinedException.php
@@ -2,7 +2,7 @@
 
 namespace App\Exception;
 
-class NotDefinedException extends \Exception
+final class NotDefinedException extends \Exception
 {
     public function __construct($message = null)
     {
diff --git a/application/src/Exception/NotProcessedException.php b/application/src/Exception/NotProcessedException.php
index 3ee1e54..c6e1114 100644
--- a/application/src/Exception/NotProcessedException.php
+++ b/application/src/Exception/NotProcessedException.php
@@ -2,7 +2,7 @@
 
 namespace App\Exception;
 
-class NotProcessedException extends \Exception
+final class NotProcessedException extends \Exception
 {
     public function __construct($message = null)
     {
diff --git a/application/src/Exception/NotSortableException.php b/application/src/Exception/NotSortableException.php
index aedd944..5bdf24f 100644
--- a/application/src/Exception/NotSortableException.php
+++ b/application/src/Exception/NotSortableException.php
@@ -2,6 +2,6 @@
 
 namespace App\Exception;
 
-class NotSortableException extends \Exception
+final class NotSortableException extends \Exception
 {
 }
diff --git a/application/src/Exception/RecursiveException.php b/application/src/Exception/RecursiveException.php
index 035a671..6ef5217 100644
--- a/application/src/Exception/RecursiveException.php
+++ b/application/src/Exception/RecursiveException.php
@@ -2,6 +2,6 @@
 
 namespace App\Exception;
 
-class RecursiveException extends \Exception
+final class RecursiveException extends \Exception
 {
 }
diff --git a/application/src/Exception/SourceAccessDenied.php b/application/src/Exception/SourceAccessDenied.php
index cbf11d8..d30cbde 100644
--- a/application/src/Exception/SourceAccessDenied.php
+++ b/application/src/Exception/SourceAccessDenied.php
@@ -4,6 +4,6 @@ namespace App\Exception;
 
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 
-class SourceAccessDenied extends AccessDeniedHttpException
+final class SourceAccessDenied extends AccessDeniedHttpException
 {
 }
diff --git a/application/tests/Unit/Entity/Meta/RightTest.php b/application/tests/Unit/Entity/Meta/RightTest.php
index 3ebec38..271d9c8 100644
--- a/application/tests/Unit/Entity/Meta/RightTest.php
+++ b/application/tests/Unit/Entity/Meta/RightTest.php
@@ -8,7 +8,7 @@ use App\Entity\Meta\RightInterface;
 use App\Entity\Meta\Right;
 use App\Entity\Meta\Law;
 use App\DBAL\Types\LayerType;
-use App\Exception\NoValidChoice;
+use App\Exception\NoValidChoiceException;
 use App\Entity\Source\AbstractSource;
 
 /**
@@ -77,7 +77,7 @@ class RightTest extends TestCase
             $this->assertNull($this->right->setType($key));
             $this->assertEquals($key, $this->right->getType());
         }
-        $this->expectException(NoValidChoice::class);
+        $this->expectException(NoValidChoiceException::class);
         $this->right->setType('NoneValidType');
     }
 
@@ -87,7 +87,7 @@ class RightTest extends TestCase
             $this->assertNull($this->right->setLayer($key));
             $this->assertEquals($key, $this->right->getLayer());
         }
-        $this->expectException(NoValidChoice::class);
+        $this->expectException(NoValidChoiceException::class);
         $this->right->setLayer('NoneValidLayer');
     }