Once a CAPA is created it gets the Created status. In this status you can keep editing the CAPA plan until it is finished, after which the creator changes the status to Under Signing by Approver.
Once approvers have signed off, the CAPA is then put in the Implementing status. During this status, the CAPA responsible provides information about the CAPA execution. When done, the status is changed to Under Signing by QA, who then decides if it can be closed or if an effectiveness check is required. If that’s the case, the effectiveness check result needs to be logged before the CAPA can be closed.
Note that when a change request is linked to the CAPA, then this change request is considered part of the CAPA plan. In this case the change request must be finished and closed before you can close the CAPA.