Header ": com.novell.mozilla.javascript.Undefined@7b4f611a""


With an UserApp workflow we do an post to an webservice.
The post returns an HTTP Error 400. The request has an invalid header name.

Looking at the tcp trace we see that the following header is send to the webservice.

This causes the http 400

: com.novell.mozilla.javascript.Undefined@7b4f611a

Anyone ideas how to remove that header in the workflow ?