diff --git a/library/Businessprocess/Exception/NestingError.php b/library/Businessprocess/Exception/NestingError.php
new file mode 100644
index 0000000..89cbf81
--- /dev/null
+++ b/library/Businessprocess/Exception/NestingError.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Exception;
+
+use Icinga\Exception\IcingaException;
+
+class NestingError extends IcingaException
+{
+}