AS2 MDN Disposition status

Hi,
Can any one of you please suggest…why the MDN status is not proper.
I am getting error like…
Disposition: automatic-action/MDN-sent-automatically; %status%

As shown as below.

Set-Cookie: ssnid=; path=/;
AS2-From: “Receiver AS2”
AS2-To: “Sender AS2”
AS2-Version: 1.1
Message-ID: 20170378.1139397135649.JavaMail.wmethod@wm65
Content-Type: multipart/report; Report-Type=disposition-notification; boundary="----=_Part_10_31500232.1139397135633"
Connection: Close
Content-Length: 854

------=_Part_10_31500232.1139397135633
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

MDN for -
Message ID: 16233020.1139397134446.JavaMail.wmethod@wm65
From: “Sender AS2”
To: “Receiver AS2”
Received on: 2006-02-08 at 16:42:15 (GMT+05:30)
Status: %status%
Comment: This is not a guarantee that the message has been completely processed or understood by the receiving translator

------=_Part_10_31500232.1139397135633
Content-Type: message/disposition-notification
Content-Transfer-Encoding: 7bit

Reporting-UA: webMethods Integration Server
Original-Recipient: rfc822; “Receiver AS2”
Final-Recipient: rfc822; “Receiver AS2”
Original-Message-ID: 16233020.1139397134446.JavaMail.wmethod@wm65
Disposition: automatic-action/MDN-sent-automatically; %status%

------=_Part_10_31500232.1139397135633–