Many code samples in the BlackBerry Administration API Development Guide use a string named locale. This string represents the region and language that you want your API request to apply to. For example, the string "en_US" represents the United States and the English language. To view all the locales available on your BlackBerry® Enterprise Server, you can use the findLocales() method in the utilws web service.
You can create instances only of the web services that you included when you generated the client proxy. You should not have multiple email web services. However, the methods in the email web services can be used interchangeably in most cases .