ACP2E-2152: Error while making concurrent requests to rest/V1/products/<sku>/media

Author: pradeep1819

app/code/Magento/Catalog/Model/ProductRepository/MediaGalleryProcessor.php

@@ -89,14 +89,12 @@ public function processMediaGallery(ProductInterface $product, array $mediaGalle
         $existingMediaGallery = $product->getMediaGallery('images');
         $newEntries = [];
         $entriesById = [];
-        $addMedia = false;
         if (!empty($existingMediaGallery)) {
             foreach ($mediaGalleryEntries as $entry) {
                 if (isset($entry['value_id'])) {
                     $entriesById[$entry['value_id']] = $entry;
                 } else {
                     $newEntries[] = $entry;
-                    $addMedia = true;
                 }
             }
             foreach ($existingMediaGallery as $key => &$existingEntry) {
@@ -116,7 +114,7 @@ public function processMediaGallery(ProductInterface $product, array $mediaGalle
                         // phpcs:ignore Magento2.Performance.ForeachArrayMerge
                         $existingMediaGallery[$key] = array_merge($existingEntry, $updatedEntry);
                     }
-                } elseif ($addMedia && isset($existingEntry['value_id'])) {
+                } elseif (!empty($newEntries) && isset($existingEntry['value_id'])) {
                     //avoid deleting an exiting image while adding a new one
                     unset($existingMediaGallery[$key]);
                 } elseif ($this->canRemoveImage($product, $existingEntry)) {