call web service from portal/soap config version error

Hi all,

I am trying to call a web service from our portal. Setup is as follows:

-Web service created from an RFC on a WAS6.40 system

-Portal service which consumes the web service (Portal EP6 on WAS 6.20). I created this service using the wizard (Portal service from wsdl file client side) in NWDS.

-Portal component which uses the portal service.

When I try to run the application in the portal, I get the following exception:

java.lang.IllegalStateException: SOAP CONFIG File: Version incompatible with the soap runtime.

How can I solve this?

Johan