IBM Business Process Manager - Invoking a secured web service using HTTP basic authentication from a BPEL process

From the fountain of developerWorks goodness: -

This tutorial shows you how to invoke web services that require HTTP basic authentication using the HTTP Header Setter mediation primitive available in IBM® Business Process Manager (BPM). HTTP basic authentication employs a user name and password to authenticate a service client to a secure endpoint. You can set up HTTP basic authentication when sending or receiving web service requests.

Invoking a secured web service using HTTP basic authentication from a BPEL process