diff --git a/lib/PayPal/Api/BillingInfo.php b/lib/PayPal/Api/BillingInfo.php
index 57d15ea..c1eca2d 100644
--- a/lib/PayPal/Api/BillingInfo.php
+++ b/lib/PayPal/Api/BillingInfo.php
@@ -140,7 +140,7 @@ class BillingInfo extends PayPalModel
 
     /**
      * The language in which the email was sent to the payer. Used only when the payer does not have a PayPal account.
-     * Valid Values: ["da_DK", "de_DE", "en_AU", "en_GB", "en_US", "es_ES", "es_XC", "fr_CA", "fr_FR", "fr_XC", "he_IL", "id_ID", "it_IT", "ja_JP", "nl_NL", "no_NO", "pl_PL", "pt_BR", "pt_PT", "ru_RU", "sv_SE", "th_TH", "zh_CN", "zh_HK", "zh_TW", "zh_XC"]
+     * Valid Values: ["da_DK", "de_DE", "en_AU", "en_GB", "en_US", "es_ES", "es_XC", "fr_CA", "fr_FR", "fr_XC", "he_IL", "id_ID", "it_IT", "ja_JP", "nl_NL", "no_NO", "pl_PL", "pt_BR", "pt_PT", "ru_RU", "sv_SE", "th_TH", "tr_TR", "zh_CN", "zh_HK", "zh_TW", "zh_XC"]
      *
      * @param string $language
      * 
diff --git a/lib/PayPal/Api/Invoice.php b/lib/PayPal/Api/Invoice.php
index 6db360f..37efa26 100644
--- a/lib/PayPal/Api/Invoice.php
+++ b/lib/PayPal/Api/Invoice.php
@@ -1190,7 +1190,7 @@ class Invoice extends PayPalResourceModel
     }
 
     /**
-     * Fully updates an invoice by passing the invoice ID to the request URI. In addition, pass a complete invoice object in the request JSON. Does not support partial updates.
+     * Fully updates an invoice by passing the invoice ID to the request URI. In addition, pass a complete invoice object in the request JSON. Partial updates are not supported.
      *
      * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
      * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
@@ -1213,7 +1213,7 @@ class Invoice extends PayPalResourceModel
     }
 
     /**
-     * Deletes an invoice, by ID.
+     * Delete a particular invoice by passing the invoice ID to the request URI.
      *
      * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
      * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
@@ -1234,6 +1234,52 @@ class Invoice extends PayPalResourceModel
         return true;
     }
 
+    /**
+     * Delete external payment.
+     *
+     * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
+     * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
+     * @return bool
+     */
+    public function deleteExternalPayment($transactionId, $apiContext = null, $restCall = null)
+    {
+        ArgumentValidator::validate($this->getId(), "Id");
+        ArgumentValidator::validate($transactionId, "TransactionId");
+        $payLoad = "";
+        self::executeCall(
+            "/v1/invoicing/invoices/{$this->getId()}/payment-records/{$transactionId}",
+            "DELETE",
+            $payLoad,
+            null,
+            $apiContext,
+            $restCall
+        );
+        return true;
+    }
+
+    /**
+     * Delete external refund.
+     *
+     * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
+     * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
+     * @return bool
+     */
+    public function deleteExternalRefund($transactionId, $apiContext = null, $restCall = null)
+    {
+        ArgumentValidator::validate($this->getId(), "Id");
+        ArgumentValidator::validate($transactionId, "TransactionId");
+        $payLoad = "";
+        self::executeCall(
+            "/v1/invoicing/invoices/{$this->getId()}/refund-records/{$transactionId}",
+            "DELETE",
+            $payLoad,
+            null,
+            $apiContext,
+            $restCall
+        );
+        return true;
+    }
+
     /**
      * Generate a QR code for an invoice by passing the invoice ID to the request URI. The request generates a QR code that is 500 pixels in width and height. You can change the dimensions of the returned code by specifying optional query parameters.
      *
@@ -1269,7 +1315,7 @@ class Invoice extends PayPalResourceModel
     }
 
     /**
-     * Generate the successive invoice number for the merchant.
+     * Generates the successive invoice number.
      *
      * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
      * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
diff --git a/lib/PayPal/Api/InvoiceItem.php b/lib/PayPal/Api/InvoiceItem.php
index 08811c3..ee93e3c 100644
--- a/lib/PayPal/Api/InvoiceItem.php
+++ b/lib/PayPal/Api/InvoiceItem.php
@@ -80,7 +80,7 @@ class InvoiceItem extends PayPalModel
      */
     public function setQuantity($quantity)
     {
-        NumericValidator::validate($quantity, "Percent");
+        NumericValidator::validate($quantity, "Quantity");
         $quantity = FormatConverter::formatToPrice($quantity);
         $this->quantity = $quantity;
         return $this;
diff --git a/lib/PayPal/Api/RefundDetail.php b/lib/PayPal/Api/RefundDetail.php
index e2b293c..7674ec1 100644
--- a/lib/PayPal/Api/RefundDetail.php
+++ b/lib/PayPal/Api/RefundDetail.php
@@ -12,6 +12,7 @@ use PayPal\Common\PayPalModel;
  * @package PayPal\Api
  *
  * @property string type
+ * @property string transaction_id
  * @property string date
  * @property string note
  * @property \PayPal\Api\Currency amount
@@ -42,6 +43,29 @@ class RefundDetail extends PayPalModel
         return $this->type;
     }
 
+    /**
+     * The PayPal refund transaction ID. Required with the `PAYPAL` refund type.
+     *
+     * @param string $transaction_id
+     * 
+     * @return $this
+     */
+    public function setTransactionId($transaction_id)
+    {
+        $this->transaction_id = $transaction_id;
+        return $this;
+    }
+
+    /**
+     * The PayPal refund transaction ID. Required with the `PAYPAL` refund type.
+     *
+     * @return string
+     */
+    public function getTransactionId()
+    {
+        return $this->transaction_id;
+    }
+
     /**
      * Date on which the invoice was refunded. Date format: yyyy-MM-dd z. For example, 2014-02-27 PST.
      *
diff --git a/lib/PayPal/Api/ShippingInfo.php b/lib/PayPal/Api/ShippingInfo.php
index fc31852..f851e67 100644
--- a/lib/PayPal/Api/ShippingInfo.php
+++ b/lib/PayPal/Api/ShippingInfo.php
@@ -111,7 +111,7 @@ class ShippingInfo extends PayPalModel
     }
 
     /**
-     *
+     * @deprecated Not used anymore
      *
      * @param string $email
      * @return $this
@@ -123,7 +123,7 @@ class ShippingInfo extends PayPalModel
     }
 
     /**
-     *
+     * @deprecated Not used anymore
      *
      * @return string
      */
diff --git a/lib/PayPal/Api/Template.php b/lib/PayPal/Api/Template.php
index e3a1104..e5b0f79 100644
--- a/lib/PayPal/Api/Template.php
+++ b/lib/PayPal/Api/Template.php
@@ -18,6 +18,7 @@ use PayPal\Common\PayPalModel;
  * @property \PayPal\Api\TemplateSettings[] settings
  * @property string unit_of_measure
  * @property bool custom
+ * @property \PayPal\Api\Links[] links
  */
 class Template extends PayPalModel
 {
@@ -212,4 +213,57 @@ class Template extends PayPalModel
         return $this->custom;
     }
 
+    /**
+     * Sets Links
+     *
+     * @param \PayPal\Api\Links[] $links
+     * 
+     * @return $this
+     */
+    public function setLinks($links)
+    {
+        $this->links = $links;
+        return $this;
+    }
+
+    /**
+     * Gets Links
+     *
+     * @return \PayPal\Api\Links[]
+     */
+    public function getLinks()
+    {
+        return $this->links;
+    }
+
+    /**
+     * Append Links to the list.
+     *
+     * @param \PayPal\Api\Links $links
+     * @return $this
+     */
+    public function addLink($links)
+    {
+        if (!$this->getLinks()) {
+            return $this->setLinks(array($links));
+        } else {
+            return $this->setLinks(
+                array_merge($this->getLinks(), array($links))
+            );
+        }
+    }
+
+    /**
+     * Remove Links from the list.
+     *
+     * @param \PayPal\Api\Links $links
+     * @return $this
+     */
+    public function removeLink($links)
+    {
+        return $this->setLinks(
+            array_diff($this->getLinks(), array($links))
+        );
+    }
+
 }
diff --git a/lib/PayPal/Api/TemplateData.php b/lib/PayPal/Api/TemplateData.php
index b0c3569..64d56c1 100644
--- a/lib/PayPal/Api/TemplateData.php
+++ b/lib/PayPal/Api/TemplateData.php
@@ -114,7 +114,7 @@ class TemplateData extends PayPalModel
     /**
      * For invoices sent by email, one or more email addresses to which to send a Cc: copy of the notification. Supports only email addresses under participant.
      *
-     * @param string $cc_info
+     * @param string[] $cc_info
      * 
      * @return $this
      */
diff --git a/lib/PayPal/Api/Templates.php b/lib/PayPal/Api/Templates.php
index 4ecb376..6e36a95 100644
--- a/lib/PayPal/Api/Templates.php
+++ b/lib/PayPal/Api/Templates.php
@@ -235,7 +235,7 @@ class Templates extends PayPalResourceModel
     }
 
     /**
-     * Shows the details for a template, by ID.
+     * Retrieve the details for a particular template by passing the template ID to the request URI.
      *
      * @param string $templateId
      * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
@@ -260,7 +260,7 @@ class Templates extends PayPalResourceModel
     }
 
     /**
-     * Lists all templates for the merchant.
+     * Retrieves the template information of the merchant.
      *
      * @param array $params
      * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
@@ -287,4 +287,77 @@ class Templates extends PayPalResourceModel
         return $ret;
     }
 
+    /**
+     * Delete a particular template by passing the template ID to the request URI.
+     *
+     * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
+     * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
+     * @return bool
+     */
+    public function delete($apiContext = null, $restCall = null)
+    {
+        ArgumentValidator::validate($this->getId(), "Id");
+        $payLoad = "";
+        self::executeCall(
+            "/v1/invoicing/templates/{$this->getId()}",
+            "DELETE",
+            $payLoad,
+            null,
+            $apiContext,
+            $restCall
+        );
+        return true;
+    }
+
+    /**
+     * Creates a template. 
+     *
+     * @param Template $template
+     * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
+     * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
+     * @return Template
+     */
+    public function create($template, $apiContext = null, $restCall = null)
+    {
+        ArgumentValidator::validate($template, 'template');
+        $payLoad = $template->toJSON();
+        $json = self::executeCall(
+            "/v1/invoicing/templates",
+            "POST",
+            $payLoad,
+            null,
+            $apiContext,
+            $restCall
+        );
+        $ret = new Template();
+        $ret->fromJson($json);
+        return $ret;
+    }
+
+    /**
+     * Update an existing template by passing the template ID to the request URI. In addition, pass a complete template object in the request JSON. Partial updates are not supported.
+     *
+     * @param Template $template
+     * @param ApiContext $apiContext is the APIContext for this call. It can be used to pass dynamic configuration and credentials.
+     * @param PayPalRestCall $restCall is the Rest Call Service that is used to make rest calls
+     * @return Template
+     */
+    public function update($template, $apiContext = null, $restCall = null)
+    {
+        ArgumentValidator::validate($this->getId(), "Id");
+        ArgumentValidator::validate($template, 'template');
+        $payLoad = $template->toJSON();
+        $json = self::executeCall(
+            "/v1/invoicing/templates/{$this->getId()}",
+            "PUT",
+            $payLoad,
+            null,
+            $apiContext,
+            $restCall
+        );
+        $ret = new Template();
+        $ret->fromJson($json);
+        return $ret;
+    }
+
 }
diff --git a/tests/PayPal/Test/Api/RefundDetailTest.php b/tests/PayPal/Test/Api/RefundDetailTest.php
index d5c4711..ec66a40 100644
--- a/tests/PayPal/Test/Api/RefundDetailTest.php
+++ b/tests/PayPal/Test/Api/RefundDetailTest.php
@@ -39,6 +39,7 @@ class RefundDetailTest extends \PHPUnit_Framework_TestCase
         $obj = new RefundDetail(self::getJson());
         $this->assertNotNull($obj);
         $this->assertNotNull($obj->getType());
+        $this->assertNotNull($obj->getTransactionId());
         $this->assertNotNull($obj->getDate());
         $this->assertNotNull($obj->getNote());
         $this->assertNotNull($obj->getAmount());
@@ -53,6 +54,7 @@ class RefundDetailTest extends \PHPUnit_Framework_TestCase
     public function testGetters($obj)
     {
         $this->assertEquals($obj->getType(), "TestSample");
+        $this->assertEquals($obj->getTransactionId(), "TestSample");
         $this->assertEquals($obj->getDate(), "TestSample");
         $this->assertEquals($obj->getNote(), "TestSample");
         $this->assertEquals($obj->getAmount(), CurrencyTest::getObject());
diff --git a/tests/PayPal/Test/Api/TemplateDataTest.php b/tests/PayPal/Test/Api/TemplateDataTest.php
index f132b6b..d1aa55f 100644
--- a/tests/PayPal/Test/Api/TemplateDataTest.php
+++ b/tests/PayPal/Test/Api/TemplateDataTest.php
@@ -2,7 +2,6 @@
 
 namespace PayPal\Test\Api;
 
-use PayPal\Common\PayPalModel;
 use PayPal\Api\TemplateData;
 
 /**