diff --git a/src/Message/AbstractRequest.php b/src/Message/AbstractRequest.php
index ccbd7af..fb5830d 100644
--- a/src/Message/AbstractRequest.php
+++ b/src/Message/AbstractRequest.php
@@ -189,6 +189,16 @@ public function setRecurring($value)
         return $this->setParameter('recurring', (bool) $value);
     }
 
+    public function getTransactionSource()
+    {
+        return $this->getParameter('transactionSource');
+    }
+
+    public function setTransactionSource(string $value)
+    {
+        return $this->setParameter('transactionSource', $value);
+    }
+    
     public function getAddBillingAddressToPaymentMethod()
     {
         return $this->getParameter('addBillingAddressToPaymentMethod');
diff --git a/src/Message/AuthorizeRequest.php b/src/Message/AuthorizeRequest.php
index fa8e590..3063a4e 100644
--- a/src/Message/AuthorizeRequest.php
+++ b/src/Message/AuthorizeRequest.php
@@ -28,6 +28,7 @@ public function getData()
             'orderId' => $this->getTransactionId(),
             'purchaseOrderNumber' => $this->getPurchaseOrderNumber(),
             'recurring' => $this->getRecurring(),
+            'transactionSource' => $this->getTransactionSource(),
             'serviceFeeAmount' => $this->getServiceFeeAmount(),
             'shippingAddressId' => $this->getShippingAddressId(),
             'taxAmount' => $this->getTaxAmount(),
diff --git a/tests/Message/AbstractRequestTest.php b/tests/Message/AbstractRequestTest.php
index ec64ae4..2f1b916 100644
--- a/tests/Message/AbstractRequestTest.php
+++ b/tests/Message/AbstractRequestTest.php
@@ -45,6 +45,7 @@ public function provideKeepsData(){
             array('deviceSessionId', 'abc123'),
             array('merchantAccountId', 'abc123'),
             array('recurring', true),
+            array('transactionSource', 'recurring'),
             array('addBillingAddressToPaymentMethod', true),
             array('holdInEscrow', true),
             array('storeInVault', true),