errors committed in the exercise of jurisdiction

Jurisdiction is vested by law and is determined by the material allegations in the complaint. Indeed, 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 and, hence, 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.