Questione giuridica chiave
Whether the seizure opposition court arbitrarily found that the creditor had not made the debtor's passive standing plausible.
Decisione estratta
Yes. The written undertaking of 28 July 1999 made it sufficiently plausible that the respondent had personally assumed the debt as a cumulative co-debtor.
Motivazione estratta
The cantonal court's view that no document showed a personal obligation was untenable in light of the clear wording of the signed letter; its contrary inference from a supposed group-financing structure lacked support in the file and exceeded the limited review in seizure opposition.