diff --git a/core/bulkchange/RowStatus.php b/core/bulkchange/RowStatus.php
new file mode 100644
index 000000000..abf6299e0
--- /dev/null
+++ b/core/bulkchange/RowStatus.php
@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * RowStatus
+ * A series of classes, keeping the information about a given row: could it be changed or not (and why)?
+ *
+ * @package     iTopORM
+ */
+abstract class RowStatus
+{
+    public function __construct()
+    {
+    }
+
+    abstract public function GetDescription();
+}
\ No newline at end of file