On pain of nullity, requisitions relating to technical data making it possible to identify the source of the connection or data relating to the terminal equipment used mentioned in 3° of II bis of article L. 34-1 of the French Post and Electronic Communications Code or the traffic and location data mentioned in III of the same article L. 34-1 are only possible, if required by the needs of the procedure, in the following cases:
1° The proceedings relate to a felony or misdemeanour punishable by at least three years’ imprisonment;
2° The proceedings relate to a misdemeanour punishable by at least one year’s imprisonment committed through the use of an electronic communications network and the sole purpose of these requisitions is to identify the perpetrator of the offence;
3° These requisitions concern the victim’s terminal equipment and are carried out at the victim’s request in the case of an offence punishable by a term of imprisonment;
4° These requisitions are aimed at finding a missing person as part of the procedures provided for in Articles 74-1 or 80-4 of this code or are carried out as part of the procedure provided for in Article 706-106-4.