无法知道响应的原因 "This tracking number cannot be found. Please check the number or contact the sender"

Unable to know the reason for the response "This tracking number cannot be found. Please check the number or contact the sender"

我收到一个响应 "This tracking number cannot be found. Please check the number or contact the sender.",它存在于此对象中。 当我执行 php 代码以获取来自 Fedex 的跟踪 ID(781193603730)状态数据时。但是当我尝试通过登录到他们的门户网站来检查跟踪 ID 的状态时,我能够得到响应。我需要这方面的帮助,请帮忙。响应对象=>

stdClass 对象 ( [HighestSeverity] => 成功 [通知] => stdClass 对象 ( [严重性] => 成功 [来源] => trck [代码] => 0 [消息] => 请求已成功处理。 [LocalizedMessage] => 请求已成功处理。 )

[TransactionDetail] => stdClass Object
    (
        [CustomerTransactionId] => *** Track Request using PHP ***
    )

[Version] => stdClass Object
    (
        [ServiceId] => trck
        [Major] => 16
        [Intermediate] => 0
        [Minor] => 0
    )

[CompletedTrackDetails] => stdClass Object
    (
        [HighestSeverity] => SUCCESS
        [Notifications] => stdClass Object
            (
                [Severity] => SUCCESS
                [Source] => trck
                [Code] => 0
                [Message] => Request was successfully processed.
                [LocalizedMessage] => Request was successfully processed.
            )

        [DuplicateWaybill] => 
        [MoreData] => 
        [TrackDetailsCount] => 0
        [TrackDetails] => stdClass Object
            (
                [Notification] => stdClass Object
                    (
                        [Severity] => ERROR
                        [Source] => trck
                        [Code] => 9040
                        [Message] => This tracking number cannot be found. Please check the number or contact the sender.
                        [LocalizedMessage] => This tracking number cannot be found. Please check the number or contact the sender.
                    )

                [TrackingNumber] => 781193603730
                [StatusDetail] => stdClass Object
                    (
                        [Location] => stdClass Object
                            (
                                [Residential] => 
                            )

                    )

                [PackageSequenceNumber] => 0
                [PackageCount] => 0
                [DeliveryAttempts] => 0
                [TotalUniqueAddressCountInConsolidation] => 0
                [DeliveryOptionEligibilityDetails] => Array
                    (
                        [0] => stdClass Object
                            (
                                [Option] => INDIRECT_SIGNATURE_RELEASE
                                [Eligibility] => INELIGIBLE
                            )

                        [1] => stdClass Object
                            (
                                [Option] => REDIRECT_TO_HOLD_AT_LOCATION
                                [Eligibility] => INELIGIBLE
                            )

                        [2] => stdClass Object
                            (
                                [Option] => REROUTE
                                [Eligibility] => INELIGIBLE
                            )

                        [3] => stdClass Object
                            (
                                [Option] => RESCHEDULE
                                [Eligibility] => INELIGIBLE
                            )

                    )

            )

    )

)

我发现我正在测试的联邦快递跟踪 ID 是真实的,我用于联邦快递跟踪 api 的凭据属于 test/sandbox 类型而非生产。