If we consider all the AMCs issued in a given service perimeter, the uniqueness of a predefined identifier is guaranteed by all the following fields:

  • PIDXSector (2 bytes) which defines the service perimeter ;
  • PIDXKeyRef (2 bytes) which defines the TDES key used to calculate the identifiers from a root value;
  • PIDXValue (4 bytes) which defines the value calculated from the above key and a root value.

This uniqueness is ensured by the respect of the rules defined for the choice of the values of PIDXSector, PIDXKeyRef, and PIDXValue.
Within a given information system, PIDXKeyRef or PIDXSector can be omitted if they are identical for all AMCs managed by this system.

So, in the case of the common AMC, to use one of the ranges defined on the ADCET site (Common AMC value ranges), it is necessary and sufficient that in the data structure of the predefined identifiers there is :

  • PIDScopeID = 250E00h (common AMC).
  • PIDXKeyRef = 0101h (TDES key referenced on the ADCET site, Keys for the predefined identifiers of the common AMC)


Of course, it is also necessary that the one who produces the predefined identifiers takes values only in the ranges which were allocated to him by the ADCET.

IMPORTANT - Rule of uniqueness and non-correlation: the issuer of the predefined identifiers (indicated by PIDIssuerReference) guarantees that each value it generates is used only once for a given sector of activity, and that the identifier must not be deduced from the sole knowledge of one or more other AMC identifiers
The principles of value generation used for the common AMC, and recommended for the specific AMCs, are as follows:

  • the issuer of predefined identifiers has a whole range of values of 4 bytes (i.e. more than 4 billion possible values) which he can subdivide as he wishes. It is for example possible to split it into smaller ranges assignable to different subcontractors or to different projects, provided that these ranges do not overlap;
  • A triple-DES ("TDES") key managed by the governance of the service scope (ADCET for the AMC commue) is used. This key must remain confidential because it can predict the numbers of the AMC applications: only the entities that generate the identifiers need to know it.

In order to comply with CNIL recommendations, the card bears several identifiers (from 1 to 10: these identifiers are reserved for public services corresponding to a sector of activity defined by the CNIL):

1 Taxation Tax or fee for household waste collection. Tourist tax.

2 Labor and social services Employment exchange. Apprenticeship. Professional training. Application for internships and jobs. Management of social aid (application, allocation and follow-up) in the following areas

application for housing and/or assistance ;

grants ;

personalized autonomy allowance

aid for the disabled;

active solidarity income.

3 Health Maternal and child protection. Vaccination plan. Heat wave plan. Warning and protection plan for the population.

4 Transport: Registration, monitoring and online payment of school or municipal services, individual or public transport (bicycle, car, bus, etc.) Information on traffic conditions.

5 Civil status and citizenship Request for extracts or copies of civil status records, family record book. Registration for the defense and citizenship day/compulsory citizen census. Registration on electoral lists. Notification of change of address. Certificate of reception. Authorization to leave the territory. Application for identity, travel or residence permits.

6 Relations with elected officials Municipal communication. User relations with elected officials (request for an appointment, etc.).

7 School and extracurricular services, sports and socio-cultural activities Management of files (registration, follow-up and online payment) in the following areas

leisure center without accommodation ;

tourist services ;

vacation center ;

school ;

day-care center;

School catering ;

sports activities (municipal swimming pool, sports hall, etc.);

socio-cultural activities (library, media library, museum, reservation of municipal hall);

training for adults ;

rental of municipal halls or equipment;

meals on wheels.

8 Economy and town planning Registration of the activity in the socio-economic directory. Aid to businesses. Request for business premises.

Management of files (application, allocation, follow-up and online payment) in the following areas: water and sanitation; building permits; development permits; demolition permits; town planning certificates; individual alignment orders.

Declaration: of completion of works; of opening of a building site; of intention to sell.

9 Special policies and roads; Temporary authorization of a drinks shop. Declaration of first or second category dog. Certificate of change of address. Payment, subscription or parking permit. Market/fair site. Access to pedestrian areas. Lost and found. Notification of noise, odor or visual nuisance. Request for intervention on the public domain (maintenance of green space, public lighting, graffiti, container, etc.). Cemetery (allocation of burial plot). Filming of films.

10 User relations User relations with the services (request for an appointment, etc.).

Registration for the ceremony for new residents.

Exercise of data protection rights (request for information, rectification, deletion, etc.).

11 Services for agents (agent card)

12 Student life services (student catering, access to premises and services reserved for students: libraries, student residences, computer rooms, etc.)

13 Loyalty and commerce

14 Mobility (Maas) mobility actions grouping either public or private transport around a single account

15- 19 Reserved for future definition PUBLIC SERVICES

20 Personal services

21 Private transport

22 Payments

23 Social networks

24 Sports, cultural and leisure activities

25 Loyalty program (outside the "city center" context)

26 to 35: RFU