# File lib/hammer_cli_import/base.rb, line 357
    def process_error(err, entity_hash)
      uniq = nil
      err['errors'].each do |arr|
        next unless recognizable_error(arr)
        uniq = find_uniq(arr)
        break if uniq && entity_hash.key?(uniq.to_sym)
        uniq = nil # otherwise uniq is not usable
      end
      return uniq
    end