[fix] rollback if exception in bulk rename
diff --git a/erpnext/utilities/doctype/rename_tool/rename_tool.py b/erpnext/utilities/doctype/rename_tool/rename_tool.py
index 3f6f3e3..18cfebe 100644
--- a/erpnext/utilities/doctype/rename_tool/rename_tool.py
+++ b/erpnext/utilities/doctype/rename_tool/rename_tool.py
@@ -51,5 +51,6 @@
 				rename_log.append("<span style='color: RED'>" + \
 					_("Failed: ") + row[0] + " -> " + row[1] + "</span>")
 				rename_log.append("<span style='margin-left: 20px;'>" + repr(e) + "</span>")
+				frappe.db.rollback()
 
 	return rename_log