diff --git a/application/symfony/src/Domain/CRUDManagement/RepositoryFactoryService.php b/application/symfony/src/Domain/CRUDManagement/RepositoryFactoryService.php
deleted file mode 100644
index fb4c619..0000000
--- a/application/symfony/src/Domain/CRUDManagement/RepositoryFactoryService.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-namespace App\Domain\CRUDManagement;
-
-use App\Entity\EntityInterface;
-use App\Repository\RepositoryInterface;
-use Doctrine\ORM\EntityManagerInterface;
-
-/**
- * @author kevinfrantz
- */
-final class RepositoryFactoryService implements RepositoryFactoryServiceInterface
-{
-    /**
-     * @var EntityManagerInterface
-     */
-    private $entityManager;
-
-    /**
-     * @param EntityManagerInterface $entityManager
-     */
-    private function __construct(EntityManagerInterface $entityManager)
-    {
-        $this->entityManager = $entityManager;
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @see \App\Domain\CRUDManagement\RepositoryFactoryInterface::getRepository()
-     */
-    public function getRepository(EntityInterface $entity): RepositoryInterface
-    {
-        $this->entityManager->getRepository(get_class($entity));
-    }
-}
diff --git a/application/symfony/src/Domain/CRUDManagement/RepositoryFactoryServiceInterface.php b/application/symfony/src/Domain/CRUDManagement/RepositoryFactoryServiceInterface.php
deleted file mode 100644
index f92b6a7..0000000
--- a/application/symfony/src/Domain/CRUDManagement/RepositoryFactoryServiceInterface.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-namespace App\Domain\CRUDManagement;
-
-use App\Repository\RepositoryInterface;
-use App\Entity\EntityInterface;
-
-/**
- * Offers a fabric for entity repositories.
- *
- * @author kevinfrantz
- */
-interface RepositoryFactoryServiceInterface
-{
-    /**
-     * @param EntityInterface $entity
-     *
-     * @return RepositoryInterface The repositoy of the interface
-     */
-    public function getRepository(EntityInterface $entity): RepositoryInterface;
-}
diff --git a/application/symfony/src/Domain/README.md b/application/symfony/src/Domain/README.md
index a5bc9b0..e256a6e 100644
--- a/application/symfony/src/Domain/README.md
+++ b/application/symfony/src/Domain/README.md
@@ -9,9 +9,9 @@ A folder MUST end on the suffix ** *Management ** to show that it has the purpos
 
 # Domain Overview
 
-## CRUD Management
-### Repository Factory Service
-Offers a fabric for entity repositories.
+## Repository Management
+### Layer Repository Factory Service
+Offers a fabric to produce entity repositories by layer
 ## Entity Management
 ### Entity Meta Information ###
 Offers some meta information about an entity
diff --git a/application/symfony/src/Domain/RepositoryManagement/LayerRepositoryFactoryService.php b/application/symfony/src/Domain/RepositoryManagement/LayerRepositoryFactoryService.php
new file mode 100644
index 0000000..22ba624
--- /dev/null
+++ b/application/symfony/src/Domain/RepositoryManagement/LayerRepositoryFactoryService.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Domain\RepositoryManagement;
+
+use App\Repository\RepositoryInterface;
+use Doctrine\ORM\EntityManagerInterface;
+use App\DBAL\Types\Meta\Right\LayerType;
+use App\Exception\NotSetException;
+use App\Entity\Source\AbstractSource;
+
+/**
+ * @author kevinfrantz
+ */
+final class LayerRepositoryFactoryService implements LayerRepositoryFactoryServiceInterface
+{
+    const LAYER_CLASS_MAP = [
+        LayerType::SOURCE => AbstractSource::class,
+    ];
+
+    /**
+     * @var EntityManagerInterface
+     */
+    private $entityManager;
+
+    /**
+     * @param string $layer
+     *
+     * @throws NotSetException
+     *
+     * @return string
+     */
+    private function getRepositoryClassName(string $layer): string
+    {
+        $map = self::LAYER_CLASS_MAP;
+        if (array_key_exists($layer, $map)) {
+            return $map[$layer];
+        }
+        throw new NotSetException('The requested layer is not mapped!');
+    }
+
+    /**
+     * @param EntityManagerInterface $entityManager
+     */
+    public function __construct(EntityManagerInterface $entityManager)
+    {
+        $this->entityManager = $entityManager;
+    }
+
+    /**
+     * @param string $layer
+     *
+     * @return RepositoryInterface
+     */
+    public function getRepository(string $layer): RepositoryInterface
+    {
+        $repositoryClassName = $this->getRepositoryClassName($layer);
+
+        return $this->entityManager->getRepository($repositoryClassName);
+    }
+}
diff --git a/application/symfony/src/Domain/RepositoryManagement/LayerRepositoryFactoryServiceInterface.php b/application/symfony/src/Domain/RepositoryManagement/LayerRepositoryFactoryServiceInterface.php
new file mode 100644
index 0000000..3b2d04c
--- /dev/null
+++ b/application/symfony/src/Domain/RepositoryManagement/LayerRepositoryFactoryServiceInterface.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Domain\RepositoryManagement;
+
+use App\Repository\RepositoryInterface;
+
+/**
+ * Offers a fabric to produce entity repositories by layer.
+ *
+ * @author kevinfrantz
+ */
+interface LayerRepositoryFactoryServiceInterface
+{
+    /**
+     * @param string $layer
+     *
+     * @return RepositoryInterface
+     */
+    public function getRepository(string $layer): RepositoryInterface;
+}
diff --git a/application/symfony/src/Domain/RequestManagement/Action/RequestedAction.php b/application/symfony/src/Domain/RequestManagement/Action/RequestedAction.php
index cb0259e..d0bf450 100644
--- a/application/symfony/src/Domain/RequestManagement/Action/RequestedAction.php
+++ b/application/symfony/src/Domain/RequestManagement/Action/RequestedAction.php
@@ -10,6 +10,7 @@ use App\Domain\RequestManagement\Right\RequestedRightInterface;
 
 /**
  * @author kevinfrantz
+ *
  * @todo Implement!
  */
 class RequestedAction extends RequestedUser implements RequestedActionInterface
diff --git a/application/symfony/src/Domain/RequestManagement/Action/RequestedActionInterface.php b/application/symfony/src/Domain/RequestManagement/Action/RequestedActionInterface.php
index 356b341..5b32f29 100644
--- a/application/symfony/src/Domain/RequestManagement/Action/RequestedActionInterface.php
+++ b/application/symfony/src/Domain/RequestManagement/Action/RequestedActionInterface.php
@@ -9,6 +9,7 @@ use App\Domain\RequestManagement\User\RequestedUserInterface;
  * An action containes multiple attributes which are neccessary to process a request.
  *
  * @see ActionType
+ *
  * @author kevinfrantz
  */
 interface RequestedActionInterface extends ActionTypeAttributInterface, RequestedUserInterface
diff --git a/application/symfony/src/Domain/RequestManagement/Action/RequestedActionServiceInterface.php b/application/symfony/src/Domain/RequestManagement/Action/RequestedActionServiceInterface.php
index 01e9c26..be8e944 100644
--- a/application/symfony/src/Domain/RequestManagement/Action/RequestedActionServiceInterface.php
+++ b/application/symfony/src/Domain/RequestManagement/Action/RequestedActionServiceInterface.php
@@ -4,7 +4,9 @@ namespace App\Domain\RequestManagement\Action;
 
 /**
  * Allows to use a action as a service.
+ *
  * @todo Implement!
+ *
  * @author kevinfrantz
  */
 interface RequestedActionServiceInterface
diff --git a/application/symfony/src/Entity/AbstractEntity.php b/application/symfony/src/Entity/AbstractEntity.php
index 6e8e969..4cd1d22 100644
--- a/application/symfony/src/Entity/AbstractEntity.php
+++ b/application/symfony/src/Entity/AbstractEntity.php
@@ -45,7 +45,7 @@ abstract class AbstractEntity implements EntityInterface
      * @var string
      */
     protected $slug;
-    
+
     public function __construct()
     {
         $this->version = 0;
diff --git a/application/symfony/src/Entity/EntityInterface.php b/application/symfony/src/Entity/EntityInterface.php
index 65df144..975ed52 100644
--- a/application/symfony/src/Entity/EntityInterface.php
+++ b/application/symfony/src/Entity/EntityInterface.php
@@ -9,6 +9,6 @@ use App\Entity\Attribut\SlugAttributInterface;
 /**
  * @author kevinfrantz
  */
-interface EntityInterface extends VersionAttributInterface, IdAttributInterface,SlugAttributInterface
+interface EntityInterface extends VersionAttributInterface, IdAttributInterface, SlugAttributInterface
 {
 }
diff --git a/application/symfony/src/Entity/Source/AbstractSource.php b/application/symfony/src/Entity/Source/AbstractSource.php
index 7daebde..136f0c5 100644
--- a/application/symfony/src/Entity/Source/AbstractSource.php
+++ b/application/symfony/src/Entity/Source/AbstractSource.php
@@ -9,7 +9,6 @@ use App\Entity\Attribut\LawAttribut;
 use App\Entity\Meta\LawInterface;
 use App\Entity\Meta\Law;
 use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
-use Symfony\Component\Validator\Constraints as Assert;
 use App\Entity\Attribut\CreatorRelationAttribut;
 use App\Entity\Meta\Relation\Parent\CreatorRelationInterface;
 use App\Entity\Meta\Relation\Parent\CreatorRelation;
diff --git a/application/symfony/tests/Unit/Domain/RepositoryManagement/LayerRepositoryFactoryServiceTest.php b/application/symfony/tests/Unit/Domain/RepositoryManagement/LayerRepositoryFactoryServiceTest.php
new file mode 100644
index 0000000..1b29dfa
--- /dev/null
+++ b/application/symfony/tests/Unit/Domain/RepositoryManagement/LayerRepositoryFactoryServiceTest.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace tests\Unit\Domain\RepositoryManagement;
+
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+use App\Domain\RepositoryManagement\LayerRepositoryFactoryServiceInterface;
+use App\Domain\RepositoryManagement\LayerRepositoryFactoryService;
+use App\Repository\RepositoryInterface;
+
+/**
+ * @author kevinfrantz
+ */
+class LayerRepositoryFactoryServiceTest extends KernelTestCase
+{
+    /**
+     * @var LayerRepositoryFactoryServiceInterface
+     */
+    private $layerRepositoryFactoryService;
+
+    public function setUp(): void
+    {
+        self::bootKernel();
+        $entityManager = self::$container->get('doctrine')->getManager();
+        $this->layerRepositoryFactoryService = new LayerRepositoryFactoryService($entityManager);
+    }
+
+    public function testGetRepository(): void
+    {
+        foreach (LayerRepositoryFactoryService::LAYER_CLASS_MAP as $layer => $class) {
+            $repositoy = $this->layerRepositoryFactoryService->getRepository($layer);
+            $this->assertInstanceOf(RepositoryInterface::class, $repositoy);
+        }
+    }
+}