Article R523-7 of the French Code of civil enforcement procedures
A creditor who obtains a writ of execution recording the existence of his claim shall serve on the garnishee a conversion deed which contains, under penalty of nullity : 1° A reference to the writ of attachment; 2° A reference to the writ of execution; 3° A separate statement of the sums due under the writ of execution, in principal, costs and accrued interest, together with an indication of the…