Issue in cosuming wsdl in PI to trigger BPM

Hello Experts,

We have a business scenario to be implemented using SAP PI and BPM

Every new mail in mail server should start bpm process. Before triggering BPM it should save mail to DB. TO achieve this we have done following POC.

We have developed a stateless web service which is consumed by PI. On receiving new mail it triggers this web service by passing all values(maildesc, from, to attachment, bcc, cc).

The web service in turn save mail to database and trigger BPM process by passing mail_uid.

The issue is, wsdl exposed from EJB to PI is not working fine as PI does no see operations of the service(structure) to bind values.

Please suggest how to resolve this or an alternate option to achievve the scenario if not this way.

Thanks,

Priya