ACP2E-2174: allow qty change for cart items without errors

Author: alzota

app/code/Magento/Checkout/Model/Cart.php

@@ -536,13 +536,12 @@ public function updateItems($data)
 
             $qty = isset($itemInfo['qty']) ? (double)$itemInfo['qty'] : false;
             if ($qty > 0) {
+                $item->clearMessage();
+                $item->setHasError(false);
+                $item->setQty($qty);
+
                 if ($item->getHasError()) {
-                    $deferredErrors[$item->getId()] = __($item->getMessage());
-                    continue;
-                } else {
-                    $item->clearMessage();
-                    $item->setHasError(false);
-                    $item->setQty($qty);
+                    throw new \Magento\Framework\Exception\LocalizedException(__($item->getMessage()));
                 }
 
                 if (isset($itemInfo['before_suggest_qty']) && $itemInfo['before_suggest_qty'] != $qty) {
@@ -566,10 +565,6 @@ public function updateItems($data)
             ['cart' => $this, 'info' => $infoDataObject]
         );
 
-        if (count($deferredErrors)) {
-            throw new \Magento\Framework\Exception\LocalizedException(current($deferredErrors));
-        }
-
         return $this;
     }