In A.G. Kwara State & Anor v Saka Adeyemo & Ors (2016) 7 SC (Pt.II) p. 149. I said that: Jurisdiction is a question of law. There are two types of jurisdiction. 1. Jurisdiction as a matter of procedural law. 2. Jurisdiction as a matter of substantive law. A litigant may waive the former. Again in Appeal No: SC.175/2005 Heritage Bank Ltd v Bentworth Finance (Nigeria) Ltd decided by this Court on 23 February, 2018 Eko J.S.C. explained the distinction between substantive jurisdiction and procedural jurisdiction.
THE FCT HIGH COURT IS NOT A COURT FOR ALL PURPOSE
Section 299 of the 1999 Constitution, be it noted, regards the FCT, Abuja “as if it were one of the States of the Federation”. Accordingly, for all intents and purposes, FCT High Court, under the Constitution, is no more than a State High Court. The Constitution has never intended it to be a High Court at large with Jurisdiction over matters outside its territory.
– E. Eko JSC. Mailantarki v. Tongo (2017) – SC.792/2015