diff --git a/src/Carriers/Correios.php b/src/Carriers/Correios.php
index 608e5b2..2a63244 100755
--- a/src/Carriers/Correios.php
+++ b/src/Carriers/Correios.php
@@ -50,41 +50,49 @@ public function calculate()
         /** @var \Webkul\Checkout\Models\Cart $cart */
         $cart = Cart::getCart();
         $total_weight = $cart->items->sum('total_weight');
+        $rates = [];
+        $tax_handling = (int)core()->convertPrice($this->getConfigData('tax_handling')) ?: 0;
+
+        $methods = explode(',', $this->getConfigData('methods'));
 
-        $data = [
-            'tipo' => $this->getConfigData('methods'),
-            'formato' => $this->getConfigData('package_type'), // opções: `caixa`, `rolo`, `envelope`
-            'cep_destino' => $cart->shipping_address->postcode,
-            'cep_origem' => core()->getConfigData('sales.shipping.origin.zipcode'),
-            'peso' => $total_weight, // Peso em kilos
-            'comprimento' => $this->getConfigData('package_length'), // Em centímetros
-            'altura' => $this->getConfigData('package_height'), // Em centímetros
-            'largura' => $this->getConfigData('package_width'), // Em centímetros
-            'diametro' => $this->getConfigData('roll_diameter'), // Em centímetros, no caso de rolo
-        ];
-
-        if ($this->getConfigData('cod_company') && $this->getConfigData('password')) {
-            $data['empresa'] = $this->getConfigData('cod_company');
-            $data['senha'] = $this->getConfigData('password');
+        if (!$methods) {
+            throw new \Exception('Select one shipping method of correios');
         }
 
-        $consult = new Consult();
-        /** @var Collection $result */
-        $result = $consult->carriers($data);
-        $rates = [];
-        $tax_handling = (int)core()->convertPrice($this->getConfigData('tax_handling')) ?: 0;
+        foreach ($methods as $method) {
+            $data = [
+                'tipo' => $method,
+                'formato' => $this->getConfigData('package_type'), // opções: `caixa`, `rolo`, `envelope`
+                'cep_destino' => $cart->shipping_address->postcode,
+                'cep_origem' => core()->getConfigData('sales.shipping.origin.zipcode'),
+                'peso' => $total_weight, // Peso em kilos
+                'comprimento' => $this->getConfigData('package_length'), // Em centímetros
+                'altura' => $this->getConfigData('package_height'), // Em centímetros
+                'largura' => $this->getConfigData('package_width'), // Em centímetros
+                'diametro' => $this->getConfigData('roll_diameter'), // Em centímetros, no caso de rolo
+            ];
 
-        foreach ($result as $item) {
-            $object = new CartShippingRate;
-            $object->carrier = 'correios';
-            $object->carrier_title = $this->getConfigData('title');
-            $object->method = 'cagartner_correios_' . Consult::getTipoIndex($item['codigo']);
-            $object->method_title = $this->getMethodTitle($item['codigo']);
-            $object->method_description = $this->getMethodDescription($item['prazo']);
-            $object->price = core()->convertPrice($item['valor']) + $tax_handling;
-            $object->base_price = core()->convertPrice($item['valor']) + $tax_handling;
-            array_push($rates, $object);
+            if ($this->getConfigData('cod_company') && $this->getConfigData('password')) {
+                $data['empresa'] = $this->getConfigData('cod_company');
+                $data['senha'] = $this->getConfigData('password');
+            }
+
+            $consult = new Consult();
+            /** @var Collection $result */
+            $result = $consult->carriers($data);
+
+            $shippingRate = new CartShippingRate;
+            $shippingRate->carrier = 'correios';
+            $shippingRate->carrier_title = $this->getConfigData('title');
+            $shippingRate->method = 'cagartner_correios_' . Consult::getTipoIndex($result['codigo']);
+            $shippingRate->method_title = $this->getMethodTitle($result['codigo']);
+            $shippingRate->method_description = $this->getMethodDescription($result['prazo']);
+            $shippingRate->price = core()->convertPrice($result['valor']) + $tax_handling;
+            $shippingRate->base_price = core()->convertPrice($result['valor']) + $tax_handling;
+
+            array_push($rates, $shippingRate);
         }
+
         return $rates;
     }
 
diff --git a/src/Helpers/Consult.php b/src/Helpers/Consult.php
index 9a028ef..86982dd 100644
--- a/src/Helpers/Consult.php
+++ b/src/Helpers/Consult.php
@@ -15,13 +15,13 @@ class Consult
     const RASTREIO_URL = 'https://www2.correios.com.br/sistemas/rastreamento/resultado_semcontent.cfm';
 
     private static $methods = array(
-        'sedex' => '04014',
+        'sedex' => '4014',
         'sedex_a_cobrar' => '40045',
         'sedex_10' => '40215',
         'sedex_hoje' => '40290',
-        'pac' => '04510',
-        'pac_contrato' => '04669',
-        'sedex_contrato' => '04162',
+        'pac' => '4510',
+        'pac_contrato' => '4669',
+        'sedex_contrato' => '4162',
         'esedex' => '81019',
     );
 
@@ -111,6 +111,7 @@ public function carriers($data, $options = array())
         if ($result = $curl->simple($endpoint, $params)) {
             $result = simplexml_load_string($result);
             $rates = array();
+
             $collect = (array) $result->Servicos;
 
             if (is_object($collect['cServico'])) {
@@ -120,6 +121,11 @@ public function carriers($data, $options = array())
             }
 
             foreach ($rates as $rate) {
+
+                if ((int) $rate->Erro) {
+                    throw new \Exception($rate->MsgErro);
+                }
+
                 $return[] = array(
                     'codigo' => (int) $rate->Codigo,
                     'valor' => self::cleanMoney($rate->Valor),