How can I submit invoices which, together with their attachments, exceed 15 megabytes?
It may sometimes be necessary to send supporting attachments separately. In such cases, please contact your invoice recipient to arrange an alternative transmission method for the attachments (e.g. a separate email).
We are currently working on a technical solution for the transmission of large attachments on the ZRE. More information about the solution on the OZG-RE is available at the FAQs OZG-RE (DE).