An objective is an outcome the management system is trying to reach. A metric is the ongoing measure. The objectives register keeps the outcomes, so it is clear what is planned, what is in progress, what has been achieved, and what is blocked.
What an objective shows
Each objective has a reference beginning with OBJ. It names the frameworks it belongs to, chosen from the management systems enabled for the organisation, plus the measure, the target, the owner, and the due date.
Status is planned, in progress, achieved, or blocked. That is how a review sees whether the programme is reaching the outcomes it set, rather than only whether the controls are operating.
When you need to change it
Management system objectives describes each field.