Is it possible to upload an Item with V3 of the Item API?

[Vamsig858]

This SDK is not working for upload an Item with V3 formats.

500 Internal Server Error is coming when I'm trying upload below Item format to V3 API.

Is this SDK is work for V3 Item formats? Any thoughts?

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[
'MPItemFeed' => [
'MPItemFeedHeader' => [
'version' => '3.1'
],
'MPItem' => [
'processMode' => 'REPLACE_ALL',
'sku' => 'RQBTEST123-B',
'productIdentifiers' => [
'productIdentifier' => [
'productIdType' => 'UPC',
'productId' => '###############'
]
],
'MPProduct' => [

            'productName' => 'Test1',
            'category' => [
                'MusicalInstrument' => [
                    'MusicalInstruments' => [
                        'shortDescription' => 'Test2',
                        'brand' => 'Snark',
                        'mainImageUrl' => 'https://walmart.####.com/testmart/images/tes2.png',
                        'productSecondaryImageURL' => [
                            'productSecondaryImageURLValue' => 'https://walmart.####.com/testmart/images/tese3.jpg',
                        ],
                    ],
                ],
            ],
        ],
    ],
],

];