FedEx Web Services Ship API: SIGNATURE\_OPTION Not Appearing on Generated Label

Title: FedEx Ship API “SIGNATURE_OPTION” not showing on generated label Body: Hi all, I’m integrating the FedEx Web Services Ship API in PHP and I need to require an adult signature on the label for an IL→US International Priority shipment. I’ve tried every combination of recipients vs. recipient, added sequenceNumber, and confirmed via the Service Availability API that SIGNATURE_OPTION should be supported, but the generated PDF label never shows the signature icon or text. Below is my full request payload: php CopyEdit

$payload = [
    'accountNumber' => ['value' => '3333333'],
    'labelResponseOptions' => 'LABEL',
    'requestedShipment' => [
        'shipper' => [
            'address' => [
                'streetLines' => ['1 Jabotinsky Rd.'],
                'city' => 'Ramat Gan',
                'stateOrProvinceCode' => '',
                'postalCode' => '5252001',
                'countryCode' => 'IL'
            ],
            'contact' => [
                'personName' => 'Mr Testt',
                'phoneNumber' => '0543399913',
                'emailAddress' => '[email protected]'
            ]
        ],
        'recipients' => [
            [
                'address' => [
                    'streetLines' => ['15 West 47th Street', 'Room 1155'],
                    'city' => 'New York',
                    'stateOrProvinceCode' => 'NY',
                    'postalCode' => '10036',
                    'countryCode' => 'US',
                    'residential' => false
                ],
                'contact' => [
                    'personName'  => 'fff ffff',
                    'phoneNumber' => '7827777777',
                    'emailAddress'=> '[email protected]'
                ]
            ]
        ],
        'pickupType'    => 'DROPOFF_AT_FEDEX_LOCATION',
        'serviceType'   => 'INTERNATIONAL_PRIORITY',
        'packagingType' => 'FEDEX_BOX',
        'shippingChargesPayment' => [
            'paymentType' => 'SENDER',
            'payor'       => [
                'responsibleParty' => [
                    'accountNumber' => ['value' => '7273']
                ]
            ]
        ],
        'customsClearanceDetail' => [ /* … */ ],
        'labelSpecification' => [
            'labelFormatType'   => 'COMMON2D',
            'labelOrder'        => 'SHIPPING_LABEL_FIRST',
            'imageType'         => 'PDF',
            'labelTemplateKey'  => 'STANDARD_LABEL'
        ],
        'requestedPackageLineItems' => [
            [
                'sequenceNumber' => 1,
                'weight' => ['units' => 'LB', 'value' => 1.1],
                'dimensions' => ['length' => 4, 'width' => 4, 'height' => 4, 'units' => 'IN'],
                'insuredValue' => ['amount' => 0, 'currency' => 'USD'],
                'specialServicesRequested' => [
                    'specialServiceTypes'   => ['SIGNATURE_OPTION'],
                    'signatureOptionDetail' => ['optionType' => 'ADULT']
                ]
            ]
        ],
        'documents' => [ /* … */ ]
    ]
];

What I’ve tried so far: • Switched between recipient and recipients • Added sequenceNumber on each package • Called the Service Availability API to confirm lane support • Checked the response notifications array for warnings (none about signature) • Verified my FedEx account/meter is enabled for signature proof Expected: Label PDF shows the adult‐signature icon/text. Actual: Label prints without any signature requirement. Any ideas what I’m still missing? Thanks in advance!