faker-ruby/faker · error · ArgumentError

state code must be in a range of 02 to 38 or 98

Error message

state code must be in a range of 02 to 38 or 98

What it means

Error "state code must be in a range of 02 to 38 or 98" thrown in faker-ruby/faker.

Source

Thrown at lib/faker/default/company.rb:483

      end

      ##
      # Get a random Indian Goods and Services Tax (GST) number.
      # For more on Indian tax number here:
      # https://simple.wikipedia.org/wiki/GSTIN
      # @params state code [String] Any state code.
      #
      # @return [String]
      # @example
      #   Faker::Company.indian_gst_number #=> "15VQPNZ2126J2ZU"
      #   Faker::Company.indian_gst_number(state_code: "22") #=> "22ZVWEY6632K0ZN"
      #
      # @faker.version 3.2.1
      def indian_gst_number(state_code: nil)
        # Check if state code is valid
        state_code_ranges = [('02'..'38'), ['98']]
        if state_code && !(state_code_ranges[0].include?(state_code) || state_code == '98')
          raise ArgumentError, 'state code must be in a range of 02 to 38 or 98'
        end

        PositionalGenerator.new(:string) do |gen|
          # Generate a state code if not given
          if state_code
            gen.lit(state_code, name: :state_code_param)
          else
            gen.letter(name: :state_code_param, length: 1, ranges: state_code_ranges)
          end

          # Construct taxpayer number
          gen.group(name: :taxpayer_number) do |g_|
            g_.letter(length: 3, ranges: ['A'..'Z'])
            g_.letter(length: 1, ranges: [%w[A B C F G H L J P T K]])
            g_.letter(length: 1, ranges: ['A'..'Z'])
            g_.int(length: 4, ranges: [0..9999])
            g_.letter(length: 1, ranges: ['A'..'Z'])
          end

View on GitHub (pinned to cca4184947)

When it happens

Trigger: Thrown at lib/faker/default/company.rb:483 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/2d044a3503bc2217. Report an issue: GitHub.