Questão jurídica principal
Whether the appeal could be heard and whether the dispute could be expanded to a new percentage allocation of partnership income.
Decisão extraída
The appeal was admissible in principle, but the requested new allocation of partnership income raised the dispute beyond the contested scope and was inadmissible.
Fundamentação extraída
A federal complaint may challenge the Zug assessment in an intercantonal double-taxation dispute, but the appellants may not enlarge the subject matter for the first time before the Federal Supreme Court.