Issue with WSDL with https Protocol

Hi All ,

I am getting the below error while posting the data to the WSDL provider with Hppts Protocol with using the Soap UI tool

"[GE_PARTS_CallPrice_Service_WebServices_ProcessCallPricAPI_WSD_Binder.ProcessCallPriceAPI:Request 1]; javax.net.ssl.SSLException: Received fatal alert: unexpected_message
"

When i gave WSDL to SAP Team at there end they have given along with the Certificates they are getting the Errors

"12/27/10 2:23:18 AM 51195130-11a3-11e0-869d-00145e474044 Message processing failed. Cause: com.sap.engine.interfaces.messaging.API.exception.MessagingException: iaik.security.ssl.SSLCertificateException: Peer certificate rejected by ChainVerifier
12/27/10 2:23:18 AM 51195130-11a3-11e0-869d-00145e474044 SOAP: call failed: iaik.security.ssl.SSLCertificateException: Peer certificate rejected by ChainVerifier
12/27/10 2:23:18 AM 51195130-11a3-11e0-869d-00145e474044 request entering
12/27/10 2:23:18 AM 51195130-11a3-11e0-869d-00145e474044 Message processing started
"

Please suggest me where from i have to debug.

Regards,
Vishnu