A head coach in the Bundesliga or the second Bundesliga needs a valid coaching license under the licensing rules of the German Football League, the DFL. The DFB’s Fußball-Lehrer-Lizenz, the football teacher license, is valid for three years. To renew it, a coach must show 20 hours of further training. In January 2020, Jürgen Klinsmann was head coach of Hertha BSC Berlin. He had won the World Cup in 1990 and had been national coach. He had earned his license in 2000 in a special DFB course. The DFL now stated that proof of a valid license was missing. Klinsmann said: An Weihnachten habe ich die Unterlagen schlichtweg vergessen, at Christmas I simply forgot the documents. He had to submit proof of the training courses he had completed. The license was then renewed, and he could coach the team against Bayern Munich.