Estou com problemas no cadastro da empresa na nuvem fiscal

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5 
[HttpPost("{franchise_id}")]
        public async Task<IActionResult> CreateFanchise(Guid franchise_id)
        {
            Configuration config = new Configuration();
            HttpClient httpClient = new HttpClient();
            HttpClientHandler httpClientHandler = new HttpClientHandler();

            var franchise = await _franchiseRepository.GetFranchise(franchise_id);

            var endereco = new EmpresaEndereco(franchise.Person.District, franchise.Person.Number, franchise.Person.Complement,
                franchise.Person.District, franchise.Person.City.CodIBGE, franchise.Person.City.Name, franchise.Person.City.State,
                franchise.Person.City.Country.CountryCode, franchise.Person.City.Country.Name, franchise.Person.CEP);

            Empresa empresa = new Empresa(franchise.Person.CPFeCNPJ, new DateTime(), new DateTime(), franchise.Person.RGeStateRegistration, " ",
                franchise.Person.Name, franchise.Person.FantasyName, franchise.Person.CellPhone, franchise.Person.Email, endereco,
                false,int.Parse(franchise.TaxRegime), 0);

            config.AccessToken = tokenAcess;

            config.BasePath = baseUrl;

            var ApiInstance = new EmpresaApi(httpClient, config, httpClientHandler);

            try
            {
                Empresa result = await ApiInstance.CriarEmpresaAsync(empresa);

                if (result is null)
                {
                    throw new ApiException(204, "cnpj não encontrado em nossa pesquisa.");
                }

                return Ok(result);
            }
            catch (ApiException ex)
            {
                if (ex.ErrorCode == 204)
                {
                    return BadRequest(ex.Message);
                }

                return BadRequest(ex.Message);
            }

        }