Unable to Post Address in PHP CodeIgniter 3 - Address Book Field Issue with NetSuite API

Question

I’m using PHP CodeIgniter 3 to interact with the NetSuite API to create vendors. While the API request succeeds and the vendor is created, the address is not saved in the "Address Book" section of NetSuite

Expected Behavior:
The vendor’s address should appear in NetSuite under the "AddressBook" section. Here is my oracle guide fro vendor as my reference https://system.netsuite.com/help/helpcenter/en_US/APIs/REST_API_Browser/record/v1/2024.2/index.html#/definitions/vendor-addressBook-addressBookAddress

Actual Behavior:
The vendor is created, but the address does not appear in NetSuite.

Question:

• Are there specific fields or configurations required for saving addresses via the NetSuite API?

Additional Context:

• The NetSuite API documentation mentions an override parameter. I tried including it but still had no success.

• I verified that other fields like companyName and phone are saved correctly.

• I’m using CodeIgniter 3 for this implementation.

Here’s the relevant payload I’m sending:

$payload = [
    "companyName" => "Vendor Test for Address 103",
    "subsidiary" => $info['primary_subsidiary_id'],
    "category" => $info['product_category_id'],
    "defaultShippingAddress" => "9161",
    "email" => $info['supplier_email_address'],
    "phone" => "0917223333",
    "isperson" => $info['type'] == 1 ? false : true,
    "firstname" => $firstname,
    "lastname" => $lastname,
    "printOnCheckAs" => $info['print_check_on_as'],
    "custentity4" => 1,
    "defaultAddress" => "B13 L7 Walnt Street Calendola Village San Pedro, Laguna PH WF2",
    "addressBookCollection" => [
        "items" => [
            [
                "addressBookElement" => [
                    "defaultBilling" => "T",
                    "defaultShipping" => "F",
                    "addressBookAddress_text" => "1234 Main St San Pedro, Laguna 4023 PH WF2!",
                    "addressBookAddress" => [
                        "addr1" => "1234 Main St",
                        "addr2" => "Suite 101",
                        "city" => "Los Angeles",
                        "state" => "CA",
                        "zip" => "90001"
                    ]
                ]
            ]
        ]
    ]
];