diff --git a/src/Model/Carrier.php b/src/Model/Carrier.php
index b4751d1..0ea580d 100644
--- a/src/Model/Carrier.php
+++ b/src/Model/Carrier.php
@@ -256,12 +256,14 @@ public function processOperatory(
         }
 
         if ($tarifa == null) {
-            $error = $this->_rateErrorFactory->create();
-            $error->setCarrier($this->_code);
-            $error->setCarrierTitle($this->getConfigData('title') . ' - ' . $operatory->getName());
-            $errorMessage = $this->getConfigData('specificerrmsg') ?: $errorMessage;
-            $error->setErrorMessage($errorMessage);
-            $rateResult->append($error);
+            if ($this->getConfigData('showmethod')) {
+                $error = $this->_rateErrorFactory->create();
+                $error->setCarrier($this->_code);
+                $error->setCarrierTitle($this->getConfigData('title') . ' - ' . $operatory->getName());
+                $errorMessage = $this->getConfigData('specificerrmsg') ?: $errorMessage;
+                $error->setErrorMessage($errorMessage);
+                $rateResult->append($error);
+            }
             return $rateResult;
         }
 
diff --git a/src/Model/OcaApi.php b/src/Model/OcaApi.php
index 9678f2b..bd93a4b 100644
--- a/src/Model/OcaApi.php
+++ b/src/Model/OcaApi.php
@@ -662,10 +662,10 @@ protected function loadFields($ci, $fields)
             $item = $ci->getElementsByTagName($field)->item(0);
             if ($item != null) {
                 // En caso de que sea un array de elementos (como puede ser Servicios)
-                if ($item->firstChild->nodeType === XML_ELEMENT_NODE) {
+                if ($item->firstChild != null && $item->firstChild->nodeType === XML_ELEMENT_NODE) {
                     $value = $this->childToArray($item->childNodes);
                 }
-                if ($item->firstChild->nodeType === XML_TEXT_NODE) {
+                if ($item->firstChild == null || $item->firstChild->nodeType === XML_TEXT_NODE) {
                     $value = $item->nodeValue;
                 }
             }