Here you will be able to read about the main document formats handled by Sproom. With some different links to the official documentation aswell as some example files.
OIOUBL is the Danish default e-invoice format.
It support the following document types:
The official example files can be downloaded by clicking here: Download example files
If a Danish recipient is receiving e-invoices, they will generally be registered in the network NemHandel.
They can be looked up via the site here: NemHandel lookup
They can also be registered for both PeppolBis and OIOUBL format in Peppol.
That can be looked up here: Peppol lookup