Error while sending data using SOAP receiver "Can't parse the document; HTTP 400 OK"

Hi Experts,

I am getting the error: "Can't parse the document; HTTP 400 OK" while sending data to using SOAP receiver channel in PI 7.31 single stack.

When I try to send the same payload using 7.0 (we have both versions in which we use 7.0 and 7.31), message is processing successfully.

In both versions we are pointing to same receiver url.

Error description is:

MP: exception caught with cause com.sap.engine.interfaces.messaging.api.exception.MessagingException: java.io.IOException: Can't parse the document; HTTP 400 OK

Exception caught by adapter framework: java.io.IOException: Can't parse the document; HTTP 400 OK

Please put your ideas...

Thanks,

SPMD