In Scrum, definition of “Done” is useful to provide clarity on the required work standard.
The definition of “Done” is defined by the Development Team and it does not have to be approved by Product Owner.
It contains information that can be used by teams to select items during Sprint planning.
It is also used to deliver increments of potentially releasable functionality each Sprint.
Keep in mind: definition of “Done” should contain conditions that are realistic to motivate the team and should not be set with the objective to make the Scrum Team’s job easier.