Required values include the target application ID, which can be descriptive text that is easy to remember, the credentials ...

Required values include the target application ID, which can be descriptive text that is easy to remember, the credentials of a Windows user account that is stored by the target application and used to run unattended data refresh operations. The site URL specifies the site collection with which the target application is associated. To associate it with additional site collections, you must use Central Administration.