On pain of nullity, the document serving the order for payment contains, in addition to the particulars prescribed for judicial officer documents, a summons to:
– either to pay the creditor the amount of the sum fixed by the order as well as interest and court fees, the amount of which is specified;
– or, if the debtor has defences to put forward, to lodge an opposition, the effect of which is to refer the creditor’s initial claim and the entire dispute to the court.
Under the same sanction, the document of service:
– indicates in a very apparent manner the time limit within which the opposition must be lodged, the court before which it must be brought as well as the methods by which this recourse may be exercised;
– warns the debtor that in the absence of opposition within the time limit indicated he will no longer be able to exercise any recourse and may be forced by all legal means to pay the sums claimed.