In law, an appeal is the process in which cases are reviewed by a higher authority, where parties request a formal change to an official decision. Appeals function both as a process for error correction as well as a process of clarifying and interpreting law. Although appellate courts have existed for thousands of years, common law countries did not incorporate an affirmative right to appeal into their jurisprudence until the 19th century.
The Federal Court of Justice (German: Bundesgerichtshof [bʊndəsɡəˈʁɪçtsˌhoːf] , BGH [beːɡeːˈhaː] ) is the highest court of civil and criminal jurisdiction in Germany. Its primary responsibility is the final appellate review of decisions by lower courts for errors of law. While, legally, a decision by the Federal Court of Justice is only binding with respect to the individual case in which it enters, de facto the court's interpretation of the law is followed by lower courts with almost no exception. Decisions handed down by the Federal Court of Justice can only be vacated by the Federal Constitutional Court for violating a provision of the German constitution, the Basic Law.
In addition to the court's appellate duties, a few judges of the Federal Court of Justice act as investigating judges in criminal investigations led by the Public Prosecutor General for a small number of exceptional offenses (such as crimes against humanity and the formation of terrorist organisations). As such, they are responsible for issuing search and arrest warrants, among other things.