diff --git a/application/module/Order/Order.php b/application/module/Order/Order.php
index 187a4ad3..909aca04 100644
--- a/application/module/Order/Order.php
+++ b/application/module/Order/Order.php
@@ -152,10 +152,14 @@ class Order
 		{
 			$uid = view::User('id');
 		}
+
+		$sql = "select count(*) as cnt from dataorder where status=1 and uuid in (select uuid from en.mdstatus) and userid=".$uid;
+		$row=$this->db->FetchRow($sql);
+		if ($row['cnt']>=$this->config->download->max) return "Reached the maximum limits of one offline application. Please remove some data.";
 		
 		if($id == -1)
 		{
-			$sql = $this->db->quoteInto("update dataorder set status=2 where status=1 and userid=?",$uid);
+			$sql = $this->db->quoteInto("update dataorder set status=2 where status=1  and uuid in (select uuid from en.mdstatus) and userid=?",$uid);
     		if($this->db->exec($sql))
 			{
 				return true;
@@ -166,7 +170,7 @@ class Order
 		
 		if($id > 0)
 		{
-			$sql = $this->db->quoteInto("update dataorder set status=2 where status=1 and userid=$uid and id=?",$id);
+			$sql = $this->db->quoteInto("update dataorder set status=2 where status=1 and uuid in (select uuid from en.mdstatus) and userid=$uid and id=?",$id);
     		if($this->db->exec($sql))
 			{
 				return true;