Is Prime Infrastructure installed in your network or lab?
You can access this documentation from your Prime Infrastructure server, at "https://your_server/webacs/api/v4/". Use the built-in search bar and see the list of API resources for your version of Prime Infrastructure using the documentation hosted on your server!
To get more information you can:
Make simple API calls to The Prime Infrastructure Always-On Sandbox
Visit DevNet forum and DevNet blogs
This API version has been deprecated. It will be removed in a future release of the product. Please develop new clients using the latest API version. Please modify your existing clients to use a later API version.