Article R221-1 of the French Code of civil enforcement procedures
The summons to pay provided for in article L. 221-1 contains, under penalty of nullity: 1° Mention of the writ of execution by virtue of which the proceedings are being carried out with a separate breakdown of the sums claimed in principal, costs and accrued interest as well as an indication of the interest rate; 2° A summons to pay the debt within a period of eight days, failing which…