diff --git a/src/Error/ApiError.php b/src/Error/ApiError.php
index d7d81b6b6d..018cf9424d 100644
--- a/src/Error/ApiError.php
+++ b/src/Error/ApiError.php
@@ -34,7 +34,7 @@ public function fieldDefinitions()
     public static function fromArray(array $data, $context = null)
     {
         if (isset($data['code'])) {
-            $className = sprintf('\Commercetools\Core\Error\%sError', self::pascalcase($data['code']));
+            $className = sprintf('\Commercetools\Core\Error\%sError', self::pascalCase($data['code']));
             if (class_exists($className)) {
                 return new $className($data, $context);
             }
@@ -42,7 +42,7 @@ public static function fromArray(array $data, $context = null)
         return new static($data, $context);
     }
 
-    protected static function pascalcase($name)
+    protected static function pascalCase($name)
     {
         return ucfirst(
             implode(
diff --git a/src/Error/DiscountCodeNonApplicableError.php b/src/Error/DiscountCodeNonApplicableError.php
new file mode 100644
index 0000000000..adf3d72726
--- /dev/null
+++ b/src/Error/DiscountCodeNonApplicableError.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * @author @jayS-de <jens.schulze@commercetools.de>
+ */
+
+namespace Commercetools\Core\Error;
+
+use Commercetools\Core\Model\Common\Attribute;
+
+/**
+ * @package Commercetools\Core\Error
+ *
+ * @method string getCode()
+ * @method DiscountCodeNonApplicableError setCode(string $code = null)
+ * @method string getMessage()
+ * @method DiscountCodeNonApplicableError setMessage(string $message = null)
+ */
+class DiscountCodeNonApplicableError extends ApiError
+{
+    const CODE = 'DiscountCodeNonApplicable';
+}
diff --git a/src/Error/InvalidTokenError.php b/src/Error/InvalidTokenError.php
index b0db07c448..c10befa82b 100644
--- a/src/Error/InvalidTokenError.php
+++ b/src/Error/InvalidTokenError.php
@@ -9,9 +9,9 @@
  * @package Commercetools\Core\Error
  *
  * @method string getCode()
- * @method AccessDeniedError setCode(string $code = null)
+ * @method InvalidTokenError setCode(string $code = null)
  * @method string getMessage()
- * @method AccessDeniedError setMessage(string $message = null)
+ * @method InvalidTokenError setMessage(string $message = null)
  */
 class InvalidTokenError extends ApiError
 {