Creditor identification number
Companies must have a creditor identification number (Gläubiger-Identifikationsnummer) in order to participate in payment transactions, particularly with EC/giro cards. In Germany, these numbers are issued by the Bundesbank in coordination with the German Banking Industry (DK). Applications can only be submitted electronically. You can place your order without a creditor ID and provide it later once issued.
Application form online: https://extranet.bundesbank.de/scp/