Questão jurídica principal
Whether the appellant’s filing labeled 'Einspruch' must be treated as a federal administrative law appeal and whether constitutional complaints may be raised within it.
Decisão extraída
The filing is to be received and treated as a Verwaltungsgerichtsbeschwerde; within that framework constitutional grievances may also be raised.
Fundamentação extraída
The legal remedy instruction in the challenged decision showed the correct characterization; in this type of appeal, constitutional arguments can be reviewed as well.