Article R3133-3 of the French Public procurement code
An Order of the Minister for the Budget, appended to this Code, defines the technical procedures for submitting, transmitting and receiving invoices on the public invoicing portal in application of Article L. 3133-6. These procedures guarantee immediate and complete receipt of invoices and ensure reliable identification of the issuer, data integrity, security, confidentiality and traceability of exchanges. Use of the public billing portal is exclusive of any other method of…