urgent: HTTPS With Client Authentication

We have a requirement SOAP sender HTTPS With Client Authentication, or two-way SSL. The SSL Configuration is done at PI level. When i try to connect

HTTP Security Level : HTTP (SUCCESS)

HTTP Security Level : HTTP Without Client Authentication (SUCCESS)

HTTP Security Level : HTTP with client Authentication (ERROR: client certificate required)

SOAPUI was used for the client service.

java.security.AccessControlException: client certificate required

Can anyone please tell me how to set the client certifcate. Have anyone success with this?

Thank You,

PM