The German Federal Government provides two portals for the transmission of electronic invoices: ZRE (Central Invoice Receipt Platform) and OZG-RE (OZG-compliant Invoice Receipt Platform). Both portals are used to receive and process electronic invoices, but are aimed at different recipient groups.
Starting in summer 2025, the platforms will be consolidated. ZRE will cease operations on December 31, 2025, and OZG-RE will become the Federal Government’s central invoice receipt platform.
ZRE = abbreviation of ‘Zentrale Rechnungseingangsporta‘ – translates to ‘Central Invoice Submission Portal’ (sometimes referred to as ‘CISP’ in English).
OZG = abbreviation of ‘OZG-konforme Rechnungseingangsplatform‘ – or ‘OZG-Compliant Invoice Entry Platform’.
| Aspect | ZRE | OZG-RE |
| Full name | abbreviation of ‘Zentrale Rechnungseingangsporta‘ – translates to ‘Central Invoice Submission Portal’ (sometimes referred to as ‘CISP’ in English). | abbreviation of ‘OZG-konforme Rechnungseingangsplatform‘ – or ‘OZG-Compliant Invoice Entry Platform’. |
| Target group | Direct federal administration (direct federal authorities) | Indirect federal administration, federal states and municipalities |
| Engagement | Mandatory for invoices to federal authorities | Required if the invoice recipient specifies this as the input channel |
| Future | Termination on 31.12.2025 | Will be the only platform from summer 2025 |
Important: All existing Peppol registrations and settings will be automatically migrated from the ZRE to the OZG-RE. No action is required from invoice issuers.
How does the OZG-RE portal work?
The OZG-RE portal works very simply.
Is registration in the OZG-RE required?
Registration is not mandatory for sending via Peppol. Registration is mandatory for using other delivery methods and for status tracking.
How do I link my Peppol ID for tracking in the OZG-RE?
The process involves several steps:
Log in to OZG-RE and enter your Peppol ID in the “Corporate Account Management” section.
Start the verification process and download the token (CSV file).
Create a test invoice in your system, attach this token file (not as a large URL attachment), and send it via Peppol to a special test address.
After successful verification, the status of your Peppol ID in OZG-RE will change to verified, and you can track invoices.
Do I have to register for OZG-RE?
If you wish to submit your invoice to OZG-RE via the PEPPOL network, registration is not required.
However, you will not be able to view the status of your submissions without registration.
What information do I need to register with OZG-RE?
Company information:
User information:
Register Click here.
How do I send invoices via OZG-RE?
There are four options:
Well, the OZG-RE web portal is free and very easy to use if you only have a small number of invoices to send.
However, if you have a large number of invoices to process, it can be quite time-consuming to process them all manually via OZG-RE.
If you have a large number of invoices, we recommend using an invoicing solution like Invoice-Portal. With a solution like Invoice-Portal, you can quickly and easily upload, convert, and send numerous invoices directly to the OZG-RE Portal. All this can be done directly from the software.
All you have to do is:
How do I know that my invoice has been received in OZG-RE?
You can check the status of all invoices you have submitted within the OZG-RE portal (provided you are registered).
You can find this information under the “Processing status of submitted X-Invoices” portal tab.
Who uses OZG-RE?
You can find an overview of all OZG-RE invoice recipients on the federal government’s website Click here.
How do I send a test invoice to OZG-RE?
To test Peppol sending, use the following identifiers:
Test Peppol Recipient ID: 0204:99661-WEBSERVICEOZG-28
Test Leitweg ID: 99661-WEBSERVICEOZG-28
How do I link and verify my Peppol ID in the OZG-RE portal?
To track the status of your invoices sent via Peppol in the OZG-RE portal, you must link your Peppol sender ID (Participant Identifier) to your user account and verify it by sending a test invoice.
To do so, please proceed as follows:
Log in to the OZG-RE portal:
Log in to your account on the OZG-RE portal .
Navigate to Company Account Management in the menu on the left.
Enter Peppol ID and generate token:
Scroll to the section "Linking your PEPPOL ID with your account..
Enter your Peppol Sender ID in the field.
Click "Start verification process".
Click on "Download verification attachment".
Save the downloaded CSV file with the verification token.
Create a test customer and invoice in the Invoice Portal:
Now switch to your Invoice Portal (your invoicing software).
Create a new test customer (invoice recipient) with the following information:
Name: OZG-RE Verification
Address: Enter any test address .
Create a new test invoice for this customer.
Fill in the required fields (e.g., invoice number, date, item, amount).
Attach token to invoice and send:
Scroll to the Attachments/Sending Attachment section in the invoice.
Add the saved CSV token file as an attachment.
Select Peppol as the shipping method.
IMPORTANT: Send the invoice to the special test address of the OZG-RE:
Peppol Recipient ID: 0204:99661-WEBSERVICEOZG-28
Routing ID: 99661-WEBSERVICEOZG-28
Confirm sending and check verification:
After sending, the invoice status will initially be “Sent” or similar.
Return to OZG-RE Portal returns to Company Account Management.
After successful processing (approximately a few minutes), the status of your Peppol ID should change to "Verification successful".
Use status tracking:
Once verification is complete, you can view the status of all invoices sent via Peppol here:
Important notes:
The verification token is only valid for a limited time. Therefore, please send the test invoice immediately after downloading it.
The test invoice will not actually be processed, but is only used for verification purposes.
Tel: +49 561-56014568
Email: info@invoice-portal.de
