Article 267 of the French Code of civil procedure

As soon as the decision appointing the expert has been handed down, the court registrar will notify him of a copy by any means.

The expert shall inform the judge of his acceptance without delay; he must begin the expert appraisal operations as soon as he is informed that the parties have deposited the advance payable by them, or the amount of the first instalment to which the deposit may have been subject, unless the judge orders him to begin his operations immediately.

Original in French 🇫🇷

Article 267

Dès le prononcé de la décision nommant l’expert, le greffier de la juridiction lui en notifie copie par tout moyen.

L’expert fait connaître sans délai au juge son acceptation ; il doit commencer les opérations d’expertise dès qu’il est averti que les parties ont consigné la provision mise à leur charge, ou le montant de la première échéance dont la consignation a pu être assortie, à moins que le juge ne lui enjoigne d’entreprendre immédiatement ses opérations.