The Exchange Reporting System (ERS®) supports issuers of Prime Standard in view of the fulfillment of their reporting duties, e.g., the transmission of annual financial statements, quarterly reports and financial calendars to Deutsche Börse. In parallel, the data are disclosed through the web site of Deutsche Börse and made available at very short notice to international investors. In system terms ERS offers an open interface; the issuer can deliver either directly or through a service provider to the interface. This tool has been available since March 2003.