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

@@ -11,7 +11,6 @@
 /**
  * Sales transaction resource model
  *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class Transaction extends EntityAbstract implements TransactionResourceInterface
 {
@@ -34,6 +33,7 @@ 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
      *
      * @param \Magento\Sales\Model\Order\Payment\Transaction $transaction
@@ -149,7 +149,7 @@ protected function _beforeSave(\Magento\Framework\Model\AbstractModel $transacti
             $parentId = (int)$this->_lookupByTxnId($orderId, $paymentId, $parentTxnId, $idFieldName);
             if ($parentId && $txnType == 'authorization') {
                 $transaction->setData('parent_id', $parentId);
-                $transaction->setData('txn_type',\Magento\Sales\Model\Order\Payment\Transaction::TYPE_CAPTURE);
+                $transaction->setData('txn_type', \Magento\Sales\Model\Order\Payment\Transaction::TYPE_CAPTURE);
             }
         } else {
             $result = $this->getParentId($orderId);
@@ -176,7 +176,7 @@ protected function _beforeSave(\Magento\Framework\Model\AbstractModel $transacti
      * @param int $orderId
      * @param int $paymentId
      * @param string $txnId
-     * @param mixed (array|string|object) $columns
+     * @param mixed $columns (array|string|object) $columns
      * @param bool $isRow
      * @param string $txnType
      * @return array|string
@@ -234,7 +234,7 @@ protected function getParentId(int $orderId): array
         )->where(
             'order_id = ?',
             $orderId
-        )->order('transaction_id','ASC')->limit(1);
+        )->order('transaction_id', 'ASC')->limit(1);
         return $connection->fetchAll($select);
     }
 }