AC-10042::/V1/transactions REST API returns error when parent_txn_id = txn_id

Author: AshishKumarPundeer

app/code/Magento/Sales/Model/ResourceModel/Order/Payment/Transaction.php

@@ -34,7 +34,7 @@ protected function _construct()
     /**
      * Update transactions in database using provided transaction as parent for them
      *
-     * have to repeat the business logic to avoid accidental injection of wrong transactions
+     * Have to repeat the business logic to avoid accidental injection of wrong transactions
      *
      * @param \Magento\Sales\Model\Order\Payment\Transaction $transaction
      * @return void
@@ -126,6 +126,7 @@ public function getOrderWebsiteId($orderId)
 
     /**
      * Lookup for parent_id in already saved transactions of this payment by the order_id
+     * 
      * Also serialize additional information, if any
      *
      * @param \Magento\Framework\Model\AbstractModel|\Magento\Sales\Model\Order\Payment\Transaction $transaction