Acknowledgement not received for B2B Outbound message

Hi All,

My scenario is an outbound interface for Purchase Order Acknowledg+ment from IDOC to EDI using B2B add-on,which receives Functional Acknowledgement.I have configured alert rule for the same.When the interface is triggered , I get the below error as an alert message to my inbox.In Monitoring the message is delivered but there are no message logs.In B2B acknowledgments the status indicator show success and the status code is ACCEPTED_RECV.

Please let me know what could be the possible solution for the above error message.

Thanks & Regards,

Sowjanya,B