To override the default configuration through which the bus-enabled web services component accesses a secure service integration bus, you configure an authentication alias that the service integration resource adapter uses to access the bus.
For more information, see Bus-enabled web services default configuration for accessing a secure bus.
You can override this default configuration by defining an authentication alias that the service integration resource adapter uses to access the bus. Using an authentication alias does not make your configuration more secure. However, you might want to use an alias for consistency of approach if you have other application servers running under WebSphere Application Server Version 6.0.x, or to support your internal business controls for use of IDs and passwords.