Hello @Costanza Cantalini , Thanks for using Microsoft Q&A Platform.
As per the documentation, the European driver license is a supported document type.
Could you please share the sample document with us through the private message feature here, or email it to us so that we can replicate the issue on our end?
Also, could you confirm the API version you are currently using?
If you still face issue, please raise a support ticket in the Azure portal.
I hope this helps.
Regards,
Vasavi