Article R2312-1 of the French General Code of Local Authorities
For the application of the provisions set out in the first paragraph of article L. 2312-3, the municipal council deliberates, in communes of 10,000 inhabitants or more, on the vote of the budget by nature or by function. Thereafter, this deliberation may only be modified once, at the latest at the end of the first full financial year following the renewal of the municipal council.