Whether the cantonal court had territorial jurisdiction for an AVS liability appeal under Art. 52 al. 5 LAVS.
Jurisdiction lies with the insurance court of the canton where the employer had its seat; here that was Valais, so the present court lacked territorial jurisdiction.
Art. 52 al. 5 LAVS creates an imperative special forum for damage-repair actions; when the employer is a legal person, the appeal must be brought in the canton of the company's seat, not the domicile of the natural person organ.