Key legal question
Whether the office's 12 July 2007 letter opening supplementary bankruptcy proceedings was a challengeable measure and could be revoked after the complaint period.
Extracted holding
The letter was a challengeable enforcement measure, and the office could not revoke it after the complaint period had expired because the alleged nullity exception did not apply.
Extracted reasoning
A measure under Art. 17 LP includes an office act with external effects in an enforcement matter. Reconsideration after expiry of the complaint period is only admissible if the measure is null under Art. 22 LP. Here, the office did not know the alleged postposition agreement and did not rely on nullity; therefore the reconsideration was itself void.