Article R624-1 of the French Commercial code
The verification of claims is carried out by the mandataire judiciaire, the debtor and, where applicable, the designated auditors, present or duly summoned. If a claim other than that mentioned in article L. 625-1 is discussed, the mandataire judiciaire shall notify the creditor or its agent by registered letter with acknowledgement of receipt. The thirty-day period provided for in article L. 622-27 short from receipt of the letter. This letter…