HTTP client code 400 reason ICM_HTTP_CONNECTION_FAILED

Hi Frnds,

I am working File to HTTP Synchronous scenario,when i am testing the interface i am getting below error,i dont the exact reason,its saying System error,any inputs...

http://sap.com/xi/XI/Message/30" xmlns:SOAP=" http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">

<SAP:Category>XIAdapter</SAP:Category>

<SAP:Code area="PLAINHTTP_ADAPTER">ATTRIBUTE_CLIENT</SAP:Code>

<SAP:P1>400</SAP:P1>

<SAP:P2>ICM_HTTP_CONNECTION_FAILED</SAP:P2>

<SAP:P3 />

<SAP:P4 />

<SAP:AdditionalText />

<SAP:Stack>HTTP client code 400 reason ICM_HTTP_CONNECTION_FAILED</SAP:Stack>

<SAP:Retry>N</SAP:Retry>

</SAP:Error>

Regards,

Raj