We do not assume any liability for any loss of data caused by the use of the program USt-IdNr-Prüfung.
The USt-IdNr-Prüfung check also has no influence on the determined result values and only returns these in a defined format.
If the interface of the Bundeszentralamt für Steuern (BZSt) changes, an update of the software will be created and made available after notification.

We update this documentation parallel to the development of the application. We do not necessarily update this documentation in the event of changes in the application which do not require any special instructions for operation.