This diploma thesis discusses the new model of appeal in relation to the two-staged administrative jurisdiction. Initially, the implemention of the administrative jurisdiction novella 2012 and its innovations are covered. The main aspect of the novella is to introduce the two-staged administrative jurisdiction. The UVS ("unabhängige Verwaltungssenate") were dissolved and replaced by the new Administrative Courts of the Laender. Against rulings by administrative authorities one can lodge a complaint to the Administrative Courts of the Laender. Against decisions by the Administrative Courts of the Laender one can lodge a revision to the Administrative Court.The aim of the newly adopted revision proceedings serves to relief the Administrative Court. In order to realize this intention, the access to the Administrative Court has been restricted. According to Art 133 Abs 4 B-VG, revisions against the decision of an Administrative Court are admissible, if the solution depends on a legal question of essential importance. This thesis focuses on the definition of the legal question of essential importance and additionally provides a general explanation of revision proceedings.