Questão jurídica principal
Whether the cantonal remand decision was an appealable final decision.
Decisão extraída
The remand was treated as a final decision because the lower authority retained no meaningful discretion and only had to carry out a mathematical implementation.
Fundamentação extraída
The only disputed point was the deduction from the statistical invalid income; the IV office had to apply a fixed calculation, so the remand did not leave room for substantive reassessment.