HTTP receiver adapter : message not reaching partner

Hi,

Scenario: IDOC -> PI7.0 -> HTTP

Idoc has to be routed after mapping to XML message to partner via HTTP post.

Partner says, he has not received any message from PI.I can see successful status in SXMB_MONI. As HTTP adapter is not part of adapter framework, so I can not see message under Adapter engine in RWB, Right?

Outbound message has DTD reference, is this should cause any problems?

One more thing, under sxmb_moni, under trace I can see message

"HTTP code:200, Ok".

How can I ensure that PI has sent successfully message to partner.

Please note that for HTTP adapter configuration: I have created HTTP destination on XI system with URL, service number and path prefix. It is successful.

Best Regards,

Divyesh