Web Service....error

Hi,

I created a service that should expose a methode that will execute a BAPI.

Here is the interface:

public interface IMyBAPIService extends IService

{

public static final String KEY = "bapi1service";

public JCO.Function executeBAPI(IPortalComponentRequest request, String ministry) ;

}

When I try to create a Portal Web Service from Portal Service, I get an error :

"Cannot follow operations if a method contening IPortalComponentRequest is selected".

I thought I should pass the request object to the getJCOClientPoolEntry(sapSystem, request).

Any help will be great.

Thanks.