diff --git a/application/src/Entity/AbstractSource.php b/application/src/Entity/AbstractSource.php
index 2739ca0..7edb587 100644
--- a/application/src/Entity/AbstractSource.php
+++ b/application/src/Entity/AbstractSource.php
@@ -19,8 +19,7 @@ abstract class AbstractSource implements SourceInterface
 {
     use IdAttribut,NodeAttribut;
 
-    /**
-     * @var ConfigurationInterface
-     */
-    protected $configuration;
+    public function __construct(){
+        $this->node = new Node();
+    }
 }
diff --git a/application/src/Entity/Attribut/NodeAttribut.php b/application/src/Entity/Attribut/NodeAttribut.php
index 5562730..a0cb5fc 100644
--- a/application/src/Entity/Attribut/NodeAttribut.php
+++ b/application/src/Entity/Attribut/NodeAttribut.php
@@ -11,7 +11,7 @@ trait NodeAttribut
 {
     /**
      * @var NodeInterface
-     * @ORM\OneToOne(targetEntity="Node")
+     * @ORM\OneToOne(targetEntity="Node",cascade={"persist", "remove"})
      * @ORM\JoinColumn(name="node_id", referencedColumnName="id")
      */
     protected $node;
diff --git a/application/src/Entity/Configuration.php b/application/src/Entity/Configuration.php
deleted file mode 100644
index 1e209f9..0000000
--- a/application/src/Entity/Configuration.php
+++ /dev/null
@@ -1,48 +0,0 @@
-<?php
-
-namespace App\Entity;
-
-/**
- * @author kevinfrantz
- */
-class Configuration implements ConfigurationInterface
-{
-    /**
-     * @var PropertyInterface
-     */
-    protected $read;
-
-    /**
-     * @var PropertyInterface
-     */
-    protected $write;
-
-    /**
-     * @var PropertyInterface
-     */
-    protected $administrate;
-
-    public function setAdministrate(Property $administrate): void
-    {
-    }
-
-    public function getAdministrate(): Property
-    {
-    }
-
-    public function setWrite(Property $write): void
-    {
-    }
-
-    public function getWrite(): Property
-    {
-    }
-
-    public function setRead(Property $read): void
-    {
-    }
-
-    public function getRead(): Property
-    {
-    }
-}
diff --git a/application/src/Entity/ConfigurationInterface.php b/application/src/Entity/ConfigurationInterface.php
deleted file mode 100644
index a80a7f3..0000000
--- a/application/src/Entity/ConfigurationInterface.php
+++ /dev/null
@@ -1,23 +0,0 @@
-<?php
-
-namespace App\Entity;
-
-/**
- * This class is not a source!
- *
- * @author kevinfrantz
- */
-interface ConfigurationInterface
-{
-    public function setRead(Property $read): void;
-
-    public function getRead(): Property;
-
-    public function setWrite(Property $write): void;
-
-    public function getWrite(): Property;
-
-    public function setAdministrate(Property $administrate): void;
-
-    public function getAdministrate(): Property;
-}
diff --git a/application/src/Entity/Property.php b/application/src/Entity/Property.php
deleted file mode 100644
index 475dfa7..0000000
--- a/application/src/Entity/Property.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-namespace App\Entity;
-
-use Doctrine\Common\Collections\ArrayCollection;
-
-/**
- * @author kevinfrantz
- */
-class Property implements PropertyInterface
-{
-    /**
-     * @var ArrayCollection|NodeInterface[]
-     */
-    protected $whitelist;
-
-    /**
-     * @var ArrayCollection|NodeInterface[]
-     */
-    protected $blacklist;
-
-    public function getLegitimated(): ArrayCollection
-    {
-    }
-
-    public function isLegitimated(SourceInterface $source): bool
-    {
-    }
-}
diff --git a/application/src/Entity/PropertyInterface.php b/application/src/Entity/PropertyInterface.php
deleted file mode 100644
index 5db6dbe..0000000
--- a/application/src/Entity/PropertyInterface.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-namespace App\Entity;
-
-use Doctrine\Common\Collections\ArrayCollection;
-
-/**
- * @author kevinfrantz
- */
-interface PropertyInterface
-{
-    public function isLegitimated(SourceInterface $source): bool;
-
-    public function getLegitimated(): ArrayCollection;
-}
diff --git a/application/src/Entity/User.php b/application/src/Entity/User.php
index 26864b4..98eb28f 100644
--- a/application/src/Entity/User.php
+++ b/application/src/Entity/User.php
@@ -45,5 +45,6 @@ class User extends BaseUser implements SourceInterface
          * @var \App\Entity\User $isActive
          */
         $this->isActive = true;
+        $this->node = new Node();
     }
 }