FedEx API SATURDAY_DELIVERY标签无法使用的问题求助

大家好，我现在在使用FedEx API创建运单时，被SATURDAY_DELIVERY这个特殊服务的问题卡壳了，实在没办法了来求助各位！

先跟大家说下我的情况：我通过Rates and Quotes API是能获取到周六配送的费率选项的，这说明我用的寄件和收件地址对是支持周六配送的，但每次提交运单请求时，都会返回以下错误：

[{
"code":"ORGORDEST.SPECIALSERVICES.NOTALLOWED",
"message":"This special service type is not allowed for the origin/destination pair. Please update and try again",
"parameterList":[{
"key":"SPECIAL_SERVICE_TYPE",
"value":"SATURDAY_DELIVERY"
}]
}]

我已经想尽各种办法排查了：

• 试了N种不同的请求payload，调整过寄件/收件地址、取件类型、包装类型等参数
• 同时测试了沙箱环境和生产环境
• 用了真实的有效地址，也换过不同的pickupType（比如示例里的DROPOFF_AT_FEDEX_LOCATION）、不同的packagingType（比如FEDEX_BOX，因为之前查过很多区域的周六配送要求用官方包装）

下面是我用的示例请求payload：

$payload = [
    "accountNumber" => [
        "value" => "*******"
    ],
    "labelResponseOptions" => "URL_ONLY",
    "requestedShipment" => [
        "shipDateStamp" => "2025-06-13", // Friday
        "pickupType" => "DROPOFF_AT_FEDEX_LOCATION",
        "serviceType" => "PRIORITY_OVERNIGHT",
        "packagingType" => "FEDEX_BOX", // Required for SATURDAY_DELIVERY in many areas
        "shipper" => [
            "contact" => [
                "personName" => "John Doe",
                "phoneNumber" => "5555555555",
                "companyName" => "Test Sender Inc"
            ],
            "address" => [
                "streetLines" => ["123 Main Street"],
                "city" => "Memphis",
                "stateOrProvinceCode" => "TN",
                "postalCode" => "38116",
                "countryCode" => "US"
            ]
        ],
        "recipients" => [[
            "contact" => [
                "personName" => "Jane Smith",
                "phoneNumber" => "5555551234",
                "companyName" => "Test Receiver LLC"
            ],
            "address" => [
                "streetLines" => ["100 California Street"],
                "city" => "San Francisco",
                "stateOrProvinceCode" => "CA",
                "postalCode" => "94111",
                "countryCode" => "US",
                "residential" => true
            ]
        ]],
        "shippingChargesPayment" => [
            "paymentType" => "SENDER",
            "payor" => [
                "responsibleParty" => [
                    "accountNumber" => [
                        "value" => "*******"
                    ]
                ]
            ]
        ],
        "requestedPackageLineItems" => [[
            "weight" => [
                "units" => "LB",
                "value" => 2
            ]
        ]],
        "shipmentSpecialServices" => [
            "specialServiceTypes" => ["SATURDAY_DELIVERY"]
        ],
        "labelSpecification" => [
            "labelStockType" => "PAPER_4X6",
            "imageType" => "PDF"
        ]
    ]
];

有没有小伙伴遇到过类似的问题？是不是我哪里的参数配置遗漏或者错误了？实在是折腾了好久都没解决，恳请各位指点一二！

内容来源于stack exchange