faker-ruby/faker · error · ArgumentError

Length should be 9 or 14

Error message

Length should be 9 or 14

What it means

Error "Length should be 9 or 14" thrown in faker-ruby/faker.

Source

Thrown at lib/faker/default/company.rb:326

        loop do
          result = Array.new(3) { rand(1..9) } + Array.new(7) { rand(10) }
          break if (weight_sum(result, weights) % 11) == result[9]
        end
        result.join
      end

      ##
      # Produces a company polish register of national economy.
      #
      # @return [String]
      #
      # @example
      #   Faker::Company.polish_register_of_national_economy #=> "788435970"
      #
      # @faker.version 1.9.1
      # Get a random Polish register of national economy number. More info https://pl.wikipedia.org/wiki/REGON
      def polish_register_of_national_economy(length: 9)
        raise ArgumentError, 'Length should be 9 or 14' unless [9, 14].include? length

        random_digits = []
        loop do
          random_digits = Array.new(length) { rand(10) }
          break if collect_regon_sum(random_digits) == random_digits.last
        end
        random_digits.join
      end

      ##
      # Produces a company south african pty ltd registration number.
      #
      # @return [String]
      #
      # @example
      #   Faker::Company.south_african_pty_ltd_registration_number #=> "7043/2400717902/07"
      #
      # @faker.version 1.9.2

View on GitHub (pinned to cca4184947)

When it happens

Trigger: Thrown at lib/faker/default/company.rb:326 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of faker-ruby/faker@cca4184947 (2026-08-21). Data as JSON: /api/errors/047c983f92750ff4. Report an issue: GitHub.