The property PartyType is read-only and so must not be provided.

The property IsCompany is true if the party is a legal entity. In this case,
the fields CompanyName and CompanyLegalName have to be filled.
If the party is a company, the party needs to have a key PublicId
which value is the unique identifier of the company regarding the country. In france it is the SIREN

Language
Authentication
OAuth2
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