idnumbers
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    Class NationalID

    Portuguese Tax Identification Number (NIF - Número de Identificação Fiscal) - 9 digits Format: XXXXXXXXX where:

    • First digit: Entity type (1-2: Individual, 5: Company, etc.)
    • Last digit: Check digit

    Implements

    Index
    METADATA: IdMetadata = ...
    • Validate the Portuguese NIF

      Parameters

      • idNumber: string

      Returns boolean