The Protectorate of Bohemia and Moravia (German: "Protektorat Böhmen und Mähren" ; Czech: "Protektorát Čechy a Morava" ) was a protectorate of Nazi Germany established following the German occupation of Czechoslovakia. Earlier in 1938, with the Munich Agreement, Sudetenland territory of Czech Lands was incorporated into Nazi Germany as a Reichsgau.
Czechoslovakias border regions were incorporated into Nazi Germany in 1938
Germans called the border regions of Czechoslovakia, Sudetenland.  Which in turn means the border lands of czechoslovakia were incorporated in 1938 into nazi germany.  I have no idea why the system got it wrong.