[2] An error of judgment is one which the court may commit in the exercise of its jurisdiction. As long as the court acts within its jurisdiction, any alleged errors committed in the exercise of its discretion will amount to nothing more than mere errors of judgment. Errors of judgment include errors of procedure or mistakes in the court's findings.
[3] Errors of judgment are correctable by appeal; errors of jurisdiction are correctible only by the extraordinary writ of certiorari. Any judgment rendered without jurisdiction is a total nullity and may be struck down at any time, even on appeal; the only exception is when the party raising the issue is barred by estoppel.[4] When a court, tribunal, or officer has jurisdiction over the person and the subject matter of the dispute, the decision on all other questions arising in the case is an exercise of that jurisdiction. Consequently, all errors committed in the exercise of said jurisdiction are merely errors of judgment. Under prevailing procedural rules and jurisprudence, errors of judgment are not proper subjects of a special civil action for certiorari.