Question juridique clé
Whether the compensation office could revise prior supplementary-benefit decisions and recover overpaid benefits after discovering the actual property-sale proceeds.
Solution extraite
Yes. The earlier benefit decisions were manifestly incorrect because the property-sale proceeds had been understated; correction was significant and the resulting overpayment had to be repaid.
Motifs extraits
The sale of the apartment produced a net gain of CHF 116,373.85, not CHF 13,073.00. The office had relied on a mistaken interpretation or typo. This made the 2017 benefit decisions clearly wrong and their correction materially important, so recovery under the reopening framework was permissible regardless of fault or good faith.