This is important information, associated with a number of characteristics useful for performing controls on other linked information, in particular:
- the telephone number format,
- the format of the number that identifies a company or an activity (site tax ID number, NAF in France), and whether its entry is mandatory or not,
- the postal code format of the town and also the code of the geographic subdivision, and whether their entry is mandatory,
- whether the VAT number of this community is mandatory,
- the Bank ID code format.