The BlackBerry® Enterprise Server 5.0 SP3 includes a new set of web services called the BlackBerry® Web Services for Enterprise Administration that allow you perform many of the same tasks that you can perform by using the BlackBerry® Administration API. The BlackBerry Web Services for Enterprise Administration are SOAP based web services that provide a simpler to use definition file and greater flexibility when choosing a development platform and framework. If the BlackBerry Web Services for Enterprise Administration provides the functionality that you need for your application, you should consider migrating existing applications or creating new applications to use the BlackBerry Web Services for Enterprise Administration.
The BlackBerry Administration API is installed by default when you install the BlackBerry Administration Service component of the BlackBerry® Enterprise Server 5.0.3. If you are upgrading your BlackBerry Enterprise Server from version 5.0 to version 5.0 SP3, you should uninstall the BlackBerry Administration API 5.0 before the upgrade.