diff --git a/lib/ChargeBee/Models/Transaction.php b/lib/ChargeBee/Models/Transaction.php
index <HASH>..<HASH> 100644
--- a/lib/ChargeBee/Models/Transaction.php
+++ b/lib/ChargeBee/Models/Transaction.php
@@ -4,7 +4,7 @@ class ChargeBee_Transaction extends ChargeBee_Model
 {
 
   protected $allowed = array('id', 'subscriptionId', 'gateway', 'description', 'invoiceId', 'type', 'date',
-'amount', 'idAtGateway', 'maskedCardNumber', 'errorCode', 'errorText', 'refundedTxId', 'refundAmount','voidedAt', 'status');
+'amount', 'idAtGateway', 'maskedCardNumber', 'errorCode', 'errorText', 'refundedTxId', 'voidedAt','status');
Removed the refundAmount as it is not supported.