I am creating a customer PayPal Class. The current flow is the user orders, clicks paypal, and approves the price. Once approved, we collect the delivery address from PayPal, and get a shipping price. We then update the order with the delivery price and updated Vat and Total Order Value.

This is the error I keep getting:

{“name”:”UNPROCESSABLE_ENTITY”,”details”:[{“field”:”path”,”value”:”/purchase_units/@reference_id==”default”/amount”,”location”:”body”,”issue”:”INVALID_JSON_POINTER_FORMAT”,”description”:”Path should be a valid JSON Pointer https://tools.ietf.org/html/rfc6901 that references a location within the request where the operation is performed.”}],”message”:”The requested action could not be performed, semantically incorrect, or failed business validation.”,”debug_id”:”c*******d”,”links”:[{“href”:”https://developer.paypal.com/docs/api/orders/v2/#error-INVALID_JSON_POINTER_FORMAT”,”rel”:”information_link”,”method”:”GET”}]}

This is the template for the order:

$order = [
            'intent' => 'CAPTURE',
            'application_context' => [
                'return_url' => BASE_URL . 'shoppingcart/view_papa_cart.php?pp=ret', // Replace with your return URL
                'cancel_url' => BASE_URL . 'shoppingcart/view_cart_update.php?pp=can', // Replace with your cancel URL
            ],
            'purchase_units' => [
                [
                    'description' => 'Order', // Update as needed
                    'amount' => [
                        'currency_code' => $_COOKIE['PriceNameCookie'], // Update based on your currency
                        'value' => '0', // The total will be calculated in the loop below
                        'breakdown' => [
                            'item_total' => [
                                'currency_code' => $_COOKIE['PriceNameCookie'], // Update based on your currency
                                'value' => '0', // The total will be calculated in the loop below
                            ],
                            'shipping' => [
                                'currency_code' => $_COOKIE['PriceNameCookie'],
                                'value' => '0' // Initial value for shipping
                            ],
                            'tax_total' => [
                                'currency_code' => $_COOKIE['PriceNameCookie'],
                                'value' => '0' // Initial value for tax (VAT)
                            ]
                        ],
                    ],
                    'items' => [],
                ]
            ],
        ]; 

This is the patch code I want to update:

$patchData = [
            [
                'op' => 'replace',
                'path' => '/purchase_units/@reference_id=="default"/amount',
                'value' =>  [
                    'value' => number_format($newTotal, 2, '.', '')
                ],
                'breakdown' => [
                    'item_total' => [
                        'currency_code' => $_COOKIE['PriceNameCookie'],
                        'value' => number_format($itemTotal, 2, '.', '')
                    ],
                    'shipping' => [
                        'currency_code' => $_COOKIE['PriceNameCookie'],
                        'value' => number_format($deliveryPrice, 2, '.', '')
                    ],
                    'tax_total' => [
                        'currency_code' => $_COOKIE['PriceNameCookie'],
                        'value' => number_format($vatAmount, 2, '.', '')
                    ]
                ]
            ]
        ]; 

Based on the error, it is this part which is causing the issue:

'op' => 'replace',
                'path' => '/purchase_units/@reference_id=="default"/amount',
                'value' =>  [
                    'value' => number_format($newTotal, 2, '.', '')
                ],

I have spend some time trying to figure it out but I can not get the code working properly. I did have a lot of errors but now it’s just this one. Could someone please help and point me in the right direction.