ACP2E-2535: Issue Creating credit memos when reward point and any payment method used.

Author: arnobsh

app/code/Magento/Sales/Model/Order.php

@@ -721,7 +721,7 @@ public function canInvoice()
      */
     public function canCreditmemo()
     {
-        if ($this->hasForcedCanCreditmemo()) {
+        if ($this->hasForcedCanCreditmemo() && $this->getData('forced_can_creditmemo') === true) {
             return $this->getForcedCanCreditmemo();
         }
 

app/code/Magento/Sales/Test/Unit/Model/OrderTest.php

@@ -570,6 +570,19 @@ public function testCanNotCreditMemoWithForced()
         $this->assertTrue($this->order->canCreditmemo());
     }
 
+    /**
+     * Test canCreditMemo when the forced_can_creditmemo flag set to false.
+     *
+     * @return void
+     */
+    public function testCanNotCreditMemoWithForcedWhenFlagSetToFalse()
+    {
+        $this->prepareOrderItem();
+        $this->order->setData('forced_can_creditmemo', false);
+        $this->order->setState(Order::STATE_PROCESSING);
+        $this->assertFalse($this->order->canCreditmemo());
+    }
+
     public function testCanEditIfHasInvoices()
     {
         $invoiceCollection = $this->getMockBuilder(OrderInvoiceCollection::class)