Kernrechtsfrage
Whether the pension could be revoked by reopening the original award through reconsideration rather than revision.
Extrahierter Entscheid
Yes. The original pension award was clearly incorrect because the wrong disability-assessment method had been used; correction was significant and justified reconsideration.
Extrahierte Begründung
For self-employed persons, the extraordinary method with economically weighted activity comparison had long been the required method. Applying a pure activity comparison was a manifest legal error, so the requirements of Art. 53(2) ATSG were met.