NullPointerException SoapGateway

I’m getting a java.lang.nullpointerexception by the call to the soapgateway.
Any one knows how i can debug this problem or why it could happen?

The SagSoapGateway points to an existing wsdl with a valid webservice address. It looks like it goes wrong in the SagSoapGateway component, but i don’t know why it get’s a nullpointerexception or how i can find it out.

Is there a way to log more messages from the Mediator?

Is that WSDL secured? You may need pass HTTP basic auth. I’d check out these properties:

Also, you may want to save that WSDL in your local repository. HTH,