diff --git a/Models/NullExchangeLog.php b/Models/NullExchangeLog.php
new file mode 100644
index 0000000..21fe3fb
--- /dev/null
+++ b/Models/NullExchangeLog.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.4
+ *
+ * @package   phpOMS\Module
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 1.0
+ * @version   1.0.0
+ * @link      https://orange-management.org
+ */
+declare(strict_types=1);
+
+namespace Modules\Exchange\Models;
+
+/**
+ * Null model.
+ *
+ * @package phpOMS\Module
+ * @license OMS License 1.0
+ * @link    https://orange-management.org
+ * @since   1.0.0
+ */
+final class NullExchangeLog extends ExchangeLog
+{
+}
diff --git a/Models/NullInterfaceManager.php b/Models/NullInterfaceManager.php
new file mode 100644
index 0000000..68e8a0f
--- /dev/null
+++ b/Models/NullInterfaceManager.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.4
+ *
+ * @package   phpOMS\Module
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 1.0
+ * @version   1.0.0
+ * @link      https://orange-management.org
+ */
+declare(strict_types=1);
+
+namespace Modules\Exchange\Models;
+
+/**
+ * Null model.
+ *
+ * @package phpOMS\Module
+ * @license OMS License 1.0
+ * @link    https://orange-management.org
+ * @since   1.0.0
+ */
+final class NullInterfaceManager extends InterfaceManager
+{
+}