Kernrechtsfrage
Whether the claimant was entitled to a disability pension based on the assessed invalidity degree.
Extrahierter Entscheid
The lower-court assessment could not stand because the income evidence did not reliably show the economic impact of the health impairment; the case had to be remitted for a new pension decision.
Extrahierte Begründung
For a self-employed person running two businesses with family help, the business results were influenced by multiple non-disability factors, so an income comparison was unreliable. An extraordinary weighted activity comparison had to be carried out instead.