In the specification for the e-invoice, e.g. https://e-rechnung-bund.de/app/uploads/2025/09/Uebersichtsliste-Eingabefelder-OZG-RE_092025.pdf the fields
- BT-56 Contact person of the buyer and
- BT-58 e-mail-address of the contact person
are defined.
We'd like to have the fields be populated from Odoo when e-invoices are created, but haven't found a way to make this happen.
Can someone explain how this could be done?