diff --git a/gerencianet/pix/requester_pix.go b/gerencianet/pix/requester_pix.go
index 405cd47..3b9b804 100755
--- a/gerencianet/pix/requester_pix.go
+++ b/gerencianet/pix/requester_pix.go
@@ -1,135 +1,132 @@
-package pix
-
-import (
-	"bytes"
-	"encoding/json"
-	"errors"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"net/url"
-	"regexp"
-	"strings"
-	"time"
-	"crypto/tls"
-)
-
-type requester struct {
-	auth interface {
-		getAccessToken() (authResponseBody, error)
-	}
-	url       string
-	timeout   int
-	Token     string
-	TokenDue  time.Time
-	netClient interface {
-		Do(req *http.Request) (*http.Response, error)
-	}
-}
-
-func newRequester(clientID string, clientSecret string, CA string, Key string, sandbox bool, timeout int) *requester {
-	auth := newAuth(clientID, clientSecret,CA, Key, sandbox, timeout)
-	var cert, _ = tls.LoadX509KeyPair(CA, Key)
-	
-	var netTransport = &http.Transport{
-		TLSClientConfig: &tls.Config{
-			Certificates: []tls.Certificate{cert},
-		},
-	}
-	httpClient := &http.Client{Timeout: time.Second * time.Duration(timeout),Transport: netTransport}
-	var gnURL string
-	if sandbox {
-		gnURL = UrlSandbox
-	} else {
-		gnURL = UrlProduction
-	}
-	return &requester{*auth, gnURL, timeout, "", time.Time{}, httpClient}
-}
-
-func authenticate(requester *requester) (bool, error) {
-	if requester.Token == "" || requester.TokenDue.Before(time.Now()) {
-		tokenData, authErr := requester.auth.getAccessToken()
-		if authErr != nil {
-			return false, authErr
-		}
-		requester.Token = tokenData.AccessToken
-		requester.TokenDue = time.Now().Local().Add(time.Second * time.Duration(tokenData.ExpiresIn))
-	}
-	return true, nil
-}
-
-func (requester requester) request(endpoint string, httpVerb string, requestParams map[string]string, body map[string]interface{}) (string, error) {
-	_, authErr := authenticate(&requester)
-	if authErr != nil {
-		_, authErr = authenticate(&requester)
-	}
-	if authErr != nil {
-		return "", authErr
-	}
-
-	route := getRoute(endpoint, requestParams)
-	route += getQueryString(requestParams)
-
-	var req *http.Request
-	var requestBody io.Reader
-
-	if body != nil {
-		requestBodyBytes := new(bytes.Buffer)
-		err := json.NewEncoder(requestBodyBytes).Encode(body)
-		if err != nil {
-			return "", err
-		}
-		requestBody = requestBodyBytes
-	}
-
-	req, _ = http.NewRequest(httpVerb, requester.url+route, requestBody)
-
-	if ( httpVerb == "POST" || httpVerb == "PUT" ) && body != nil  {
-		req.Header.Add("Content-Type", "application/json")
-	}
-	req.Header.Add("accept", "application/json")
-	req.Header.Add("api-sdk", "go-" + Version)
-	req.Header.Add("Authorization", "Bearer "+requester.Token)
-	res, resErr := requester.netClient.Do(req)
-
-	if resErr != nil {
-		return "", resErr
-	}
-
-	defer res.Body.Close()
-
-	reqResp, _ := ioutil.ReadAll(res.Body)
-	response := string(reqResp)
-
-	if (res.StatusCode != http.StatusOK && res.StatusCode != http.StatusCreated && res.StatusCode != http.StatusNoContent) {
-		return "", errors.New(response)
-	}
-
-	return response, nil
-}
-
-func getRoute(endpoint string, params map[string]string) string {
-	patern, _ := regexp.Compile("\\:(\\w+)")
-	variables := patern.FindAllStringSubmatch(endpoint, -1)
-	for i := 0; i < len(variables); i++ {
-		if value, exists := params[variables[i][1]]; exists {
-			endpoint = strings.Replace(endpoint, variables[i][0], value, -1)
-			delete(params, variables[i][1])
-		}
-	}
-	return endpoint
-}
-
-func getQueryString(params map[string]string) string {
-	var query string
-	for key, value := range params {
-		if query != "" {
-			query += "&"
-		} else {
-			query += "?"
-		}
-		query += key + "=" + url.QueryEscape(value)
-	}
-
-	return query
-}
+package pix
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"regexp"
+	"strings"
+	"time"
+	"crypto/tls"
+)
+
+type requester struct {
+	auth interface {
+		getAccessToken() (authResponseBody, error)
+	}
+	url       string
+	timeout   int
+	Token     string
+	TokenDue  time.Time
+	netClient interface {
+		Do(req *http.Request) (*http.Response, error)
+	}
+}
+
+func newRequester(clientID string, clientSecret string, CA string, Key string, sandbox bool, timeout int) *requester {
+	auth := newAuth(clientID, clientSecret,CA, Key, sandbox, timeout)
+	var cert, _ = tls.LoadX509KeyPair(CA, Key)
+	
+	var netTransport = &http.Transport{
+		TLSClientConfig: &tls.Config{
+			Certificates: []tls.Certificate{cert},
+		},
+	}
+	httpClient := &http.Client{Timeout: time.Second * time.Duration(timeout),Transport: netTransport}
+	var gnURL string
+	if sandbox {
+		gnURL = UrlSandbox
+	} else {
+		gnURL = UrlProduction
+	}
+	return &requester{*auth, gnURL, timeout, "", time.Time{}, httpClient}
+}
+
+func authenticate(requester *requester) (bool, error) {
+	if requester.Token == "" || requester.TokenDue.Before(time.Now()) {
+		tokenData, authErr := requester.auth.getAccessToken()
+		if authErr != nil {
+			return false, authErr
+		}
+		requester.Token = tokenData.AccessToken
+		requester.TokenDue = time.Now().Local().Add(time.Second * time.Duration(tokenData.ExpiresIn))
+	}
+	return true, nil
+}
+
+func (requester requester) request(endpoint string, httpVerb string, requestParams map[string]string, body map[string]interface{}) (string, error) {
+	_, authErr := authenticate(&requester)
+	if authErr != nil {
+		_, authErr = authenticate(&requester)
+	}
+	if authErr != nil {
+		return "", authErr
+	}
+
+	route := getRoute(endpoint, requestParams)
+	route += getQueryString(requestParams)
+
+	var requestBody io.Reader
+	if body != nil {
+		requestBodyBytes := new(bytes.Buffer)
+		err := json.NewEncoder(requestBodyBytes).Encode(body)
+		if err != nil {
+			return "", err
+		}
+		requestBody = requestBodyBytes
+	}
+	req, _ := http.NewRequest(httpVerb, requester.url+route, requestBody)
+
+	if ( httpVerb == "POST" || httpVerb == "PUT" ) && body != nil  {
+		req.Header.Add("Content-Type", "application/json")
+	}
+	req.Header.Add("accept", "application/json")
+	req.Header.Add("api-sdk", "go-" + Version)
+	req.Header.Add("Authorization", "Bearer "+requester.Token)
+	res, resErr := requester.netClient.Do(req)
+
+	if resErr != nil {
+		return "", resErr
+	}
+
+	defer res.Body.Close()
+
+	reqResp, _ := ioutil.ReadAll(res.Body)
+	response := string(reqResp)
+
+	if (res.StatusCode != http.StatusOK && res.StatusCode != http.StatusCreated && res.StatusCode != http.StatusNoContent) {
+		return "", errors.New(response)
+	}
+
+	return response, nil
+}
+
+func getRoute(endpoint string, params map[string]string) string {
+	patern, _ := regexp.Compile("\\:(\\w+)")
+	variables := patern.FindAllStringSubmatch(endpoint, -1)
+	for i := 0; i < len(variables); i++ {
+		if value, exists := params[variables[i][1]]; exists {
+			endpoint = strings.Replace(endpoint, variables[i][0], value, -1)
+			delete(params, variables[i][1])
+		}
+	}
+	return endpoint
+}
+
+func getQueryString(params map[string]string) string {
+	var query string
+	for key, value := range params {
+		if query != "" {
+			query += "&"
+		} else {
+			query += "?"
+		}
+		query += key + "=" + url.QueryEscape(value)
+	}
+
+	return query
+}