How to upload an UBL File and sent it via Peppol

Important: Uploading files is only available in OkiOki Smart (the paid version). If you're using OkiOki Start, the upload option won’t be available.

Use this option to send your own UBL sales invoices via Peppol (the official European e-invoicing network).

⚠️ Important: Your UBL invoices must be in .XML format and must comply with the Peppol BIS3 standard. You can check whether your UBL file complies with this standard here. Select "ruleset" "OpenPeppol UBL Invoice (2025.5) (aka BIS Billing 3.0.19)".

Step 1: Please make sure you’re verified and sending is enabled

Step 2: Send your UBL file to OkiOki

Step 3: Sending

Step 1: Please make sure you’re verified and sending is enabled

Before you upload a UBL file, two things must be in place:

1. Peppol identiy verification

• Go to Your account → App settings.

• Under E-invoicing, check your PEPPOL status.

2. Enable automatic sending

• Still in App settings

• Under Sending e-invoices, tick "Send UBL sales invoices I upload over Peppol straight away."

• Click Save.

Step 2: Send your UBL file to OkiOki

There are several ways to send your UBL sales invoices to OkiOki:

• You can upload them manually.
• You can send them (automatically) to your OkiOki email address.
• You can have OkiOki pick them up from a cloud storage folder.

Step 3: Sending

As soon as OkiOki has received your UBL invoice, she will automatically send it via Peppol.