The court has two modi operandi. Each stakeholder can within 6 months of publication of a law, decree or ordinance go to the Court in order to have the law, decree or ordinance annulled because of a breach of the aforementioned Articles of the Belgian Constitution or because of a breach of the division of powers between the federal state, the communities and the regions. When the Court decides to annul a law, decree or ordinance it counts "erga omnes", for all persons.