The Peppol network uses a structured data format (UBL) to simplify the entry and automated processing of invoices.
In this context, the UBL file becomes the reference for the exchange and processing of electronic invoices between businesses.
The PDF file is not suitable for this automated processing, but remains useful as a visual support for easier reading.
Some software solutions choose to include a PDF attachment with their Peppol electronic invoices.
However, this practice is
not recommended, as the contents of the PDF and the UBL file may differ and create errors or misunderstandings.
AMI Project has chosen not to include PDF attachments in electronic invoices, but instead to offer an "
UBL Viewer" that allows you to convert and easily view UBL invoices.
You can of course still send a separate PDF to your customers if they wish, for informational purposes.