On appeal, a different (higher) court reviews the case. This court may convict or acquit the person previously convicted, or discharge him from prosecution on a point of law. Someone who has been convicted can only lodge an appeal once. After that the option remains of lodging an appeal in cassation with the Supreme Court, if the law permits.
The public prosecutor too may appeal the district court’s judgment. If this happens, the defendant will be notified and summonsed again to appear in court.