# X-Rechnung
The UBL X-Rechnung (opens new window) is a German adaptation of the EN 16931 compliant invoice using UBL 2.1. It is used by public authorities in Germany for receiving electronic invoices in a structured XML format.
Business documents The UBL X-Rechnung (opens new window) is a German adaptation of the EN 16931 compliant invoice using UBL 2.1. It is used by public authorities in Germany for receiving electronic invoices in a structured XML format.