Kernrechtsfrage
Whether the cantonal court violated the right to be heard by relying on a substituted legal reasoning without prior notice.
Extrahierter Entscheid
No violation, because the legal grounds used were reasonably foreseeable in the dispute over reconsideration and invalidity assessment.
Extrahierte Begründung
The parties could anticipate that the court would examine the legality of the reconsideration and the method for correcting the original pension award; no unforeseeable legal basis was introduced.