Questione giuridica chiave
Whether the appeal against the Basel-Stadt social insurance court judgment and the objection decision remained justiciable after full payment of the damage claim by another solidary debtor
Decisione estratta
The proceedings became moot because the full amount had been paid by a solidary co-debtor.
Motivazione estratta
Under settled case law, an Art. 52 AHVG damage claim becomes moot when one solidary debtor satisfies the entire amount; the existence of reimbursement or recourse issues between co-debtors lies outside the dispute.