Modification of the consultation file during the procedure and the obligation to advertise and put in competition
Rule n ° 1:
When the contracting authority decides to make "significant" changes to the consultation file before the deadline for submission of tenders, it is obliged to issue a corrigendum notice and to allow the candidates a new competitive time to take note of changes and submit an offer
Rule n ° 2:
When the contracting authority decides to make "minor" amendments to the consultation file before the deadline for submission of tenders, it must respect the deadline provided for in the consultation rules to this effect to allow sufficient time for candidates to see the changes and submit an offer.
It is also possible to extend the deadline for submitting tenders by a few days by alerting the candidates who have already withdrawn a consultation file and publishing a corrective notice for the others (CE 9 February 2004, Communauté urbaine de Nantes, Req. No. 259 369).
Rule n ° 3:
The boundary between substantial and non-substantial change is not easy to determine. In this case, the Council of State considers that the deletion of 20 lots out of 153 lots does not constitute a substantial modification of the procedure.