In order to avoid errors and test data accidentally being entered into the accounting books, testing must not be carried out within the productive environment. Hence, the exchange of invoices between invoice issuers and invoice recipients must be tested via a reference environment that is functionally identical to the ZRE.

Joint testing requires an agreement between the invoice issuer and the invoice recipient.

If this is not possible, invoice issuers, ERP manufacturers or service providers have the option of testing the connection to the ZRE and the validity of the submitted electronic invoices by using a test buyer reference. To use this option, please contact us via our contact form.