Attachments of up to 15 MB should be embedded directly in the invoice data file. You can find information on embedding attachments in the FAQs on the OZG-RE submission portal. The XRechnung extension also makes it possible to embed XML attachments and thus add GAEB files to your invoice as supporting documents. If you are creating an invoice using the submission portal, you can upload XML files under the “Attachments” tab. If you are using your own system to create an invoice, please ask the software company whether the XRechnung extension is supported and XML attachments can be embedded.
If you are sending your invoice to an institution connected to the OZG-RE, you can upload attachments of up to 200 MB via the web submission form by switching to the “References/Large attachments” tab. In the case of externally created invoices, large attachments can be uploaded under “Large Attachments” (see dropdown menu at the top left of the screen) and a link can be generated. This link can then be added to the invoice as a reference.
As a rule, you need to ask the invoice recipient about any requirements for a link reference before sending an invoice via the OZG-RE. If an invoice recipient cannot open a link, they can reject the invoice because it is not possible to review it.
