What does it mean to re-open a Deliverable?

After each Deliverable is completed, it must be either verified or re-opened by whoever assigned it. If you assign a Deliverable and feel that it has been adequately completed, then check the verify box.

However if you feel that the Deliverable is not complete, then you have the option to re-open. Reopening will send the Deliverable back to whom it was assigned and alerts them that they must double check and possibly re-do the task they were assigned.