Any Backlog Item is identified by a unique and searchable Key.
A Backlog Item Key is automatically created as follows: [Project] Key - [Backlog Item] #
By default, the [Project] Key is the same as the Project ID. It can be defined in the Advanced Attributes dialog box, Agile folder or when starting the Agile project.
The [Backlog Item] # is a number which is automatically increased upon the creation of a new item.
The user can modify the prefix of existing Backlog Items by entering a new value and clicking on the Update () button located on the right-hand side of the field.