Article R2193-7 of the French Public procurement code
The purchaser may not accept a subcontractor or approve its terms of payment if the single copy or the certificate of transferability has not been amended or if the proof referred to in article R. 2193-6 has not been submitted to it. If the purchaser remains silent for twenty-one days from receipt of the documents mentioned in the first paragraph and in article R. 2193-3, this constitutes acceptance of the…