Questione giuridica chiave
Whether the contract-based claim was exigible for seizure under the French-law agreement
Decisione estratta
The claim was not shown to be exigible because the contractual conditions were not met: no actual proceedings had been initiated against the appellant, and insufficiency of the guarantees was not established.
Motivazione estratta
The Supreme Court found the cantonal interpretation not arbitrary. Article 1 contemplated release only if tax collection proceedings were brought, and Article 2 could reasonably be read as referring to prior reliance on the pledged guarantees, not an unconditional duty independent of their insufficiency.