Once the Product Owner has changed the Release status from New to Started, he/she will also have to change the Iteration Status from Start to Complete.
Log in to the HTML5 client.
Select the Work workspace, Agile tab.
Select a project in the Project Data Selector.
In the Timeline section, click on the "Start" status to modify it to "Complete".
When an Iteration is completed, click on the "Complete" status to modify it to "Completed" ().
The Iteration Baseline Effort is saved automatically when moving the Iteration workflow from Start to Complete. This Baseline is required for the Burndown Chart.
An Iteration can be completed only if all Backlog Items have a “Completed” status.