使用Magento 2中的REST API向现有货件添加新的跟踪编号

$accessToken = "YOUR_ACCESS_TOKEN";
$shipmentId = "YOUR_SHIPMENT_ID";
$trackingNumber = "NEW_TRACKING_NUMBER";

$apiUrl = "https://your-magento2-store.com/rest/V1/shipment/{$shipmentId}/track";
$ch = curl_init($apiUrl);

curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    "track" => [
        "track_number" => $trackingNumber,
        "title" => "Custom Carrier"
    ]
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "Authorization: Bearer " . $accessToken
]);

$response = curl_exec($ch);
curl_close($ch);

// 处理API响应
if ($response) {
    $responseData = json_decode($response, true);
    if (isset($responseData['id'])) {
        echo "新的跟踪编号已成功添加到货件。";
    } else {
        echo "添加跟踪编号失败。";
    }
} else {
    echo "API请求失败。";
}