Initialize Protected Bank Transfer

For activating protected bank transfer in sandbox environment please send an email to integration@iyzico.com.

After activation is completed, sending "create checkout form" request will be enough to get a link or checkoutForm content.

The response contains below parameters

paymentPageUrl: This value can be assigned to a link/button or a div etc. It redirects customers to protected bank transfer page. This screen requests an email and mobile number(if you send these parameters at the time of init request, they appear as predefined). Customer selects the bank and clicks continue button. At this time, iyzico sends an informative email and sms(Price, IBAN, reference number) to the customer. Also a transaction is created on iyzico side. Because there is no payment yet,the status of payment is marked as init_bank_transfer(means that the payment is not completed yet). The bank transfer interface shows a complete transaction button. As soon as it is clicked, customer returns back an URL given by merchant at the time of init bank transfer request.

checkoutFormContent: This value contains a javascript code that loads iyzico checkout form elements to your web page. The checkout form will appear in the place where you add the mentioned "div" elements below. Checkout form contains a tab named "Protected Bank Transfer". As soon as it is clicked, the bank transfer interface appears and it asks customer an email and mobile number(if you send these parameters at the time of init request, they appear as predefined). Customer selects the bank and clicks continue button. At this time, iyzico sends an informative email and sms(Price, IBAN, reference number) to the customer. Also a transaction is created on iyzico side. Because there is no payment yet,the status of payment is marked as init_bank_transfer(means that the payment is not completed yet). The bank transfer interface shows a complete transaction button. As soon as it is clicked, customer returns back an URL given by merchant at the time of init bank transfer request.

Responsive usage

<div id="iyzipay-checkout-form" class="responsive"></div>

Pop-up usage

<div id="iyzipay-checkout-form" class="popup"></div>

After redirection to callBackUrl, you can show a message like "Order has been received" to your customers.

It is important for your customers to pay attention below points

iyzico reference number should be entered to description field while making bank transfer.
Customers should consider possible expenses for bank transfer and add the expense to the actual transfer amount. Transfer expense is between the bank and the customer. iyzico is not a part of these expenses. It is completely up to customer and his/her bank.
If customer sends more or less than the actual amount of order, the transaction will fail and the transfer will be refunded to the customer.
Transfers can be done within 3 days.

iyzico checks every transaction in every 15 minutes. If a bank transfer matches with a transaction, the status of transaction is changed to SUCCESS. iyzico informs the merchant and customer that the payment is successful. In addition, a notification is sent to callBackUrl.

The notification sample that is sent to CallBackUrl

POST NOTIFICATION SAMPLE

{
  "iyziEventTime": "1569325868970",
  "iyziEventType": "BANK_TRANSFER_AUTH",
  "iyziReferenceCode": "028246012345",
  "status": "SUCCESS",
  "token": "04de1234-32b9-6907-bf06-0987ae260e35"
}

PROTECTED BANK TRANSFER OPENING PAGE

PROTECTED BANK TRANSFER COMPLETION PAGE

All transactions are reachable on iyzico's merchant panel. To reflect the payments to your system, you can check the transaction by using the token returns from bank transfer init request or you can listen callBackUrl and update payment's status as soon as you get a notification of related payment.

Creating link or checkout form for Bank Transfer:

Parameters to be sent to the service
Parameters to be returned
Sample Codes

Parameters to be sent to the service are as follows:

Parametre ismi	Tip	Zorunluluk	Açıklama
locale	String	No	Language (default: tr)
conversationId	String	No	Conversation ID to match request and response
price	Decimal	Yes	Total amount of basket. The sum of basket items’ amount must be equal to the price of basket.
paidPrice	Decimal	Yes	Final amount (including installment fee) that will be charged to customer’s card
currency	String	Yes	Currency (default: TRY). Alternatively, you can set USD, EUR, GBP
installment	Integer	Yes	It is not possible to make installment for bank transfers. For payment with cards it can be sent as 1, 2, 3, 6, 9, 12
basketId	String	No	Merchant's basket ID
paymentChannel	String	No	Payment channel. Valid values are: WEB, MOBILE, MOBILE_WEB, MOBILE_IOS, MOBILE_ANDROID, MOBILE_WINDOWS, MOBILE_TABLET, MOBILE_PHONE
paymentGroup	String	No	Payment group (default: PRODUCT). Valid values are PRODUCT, LISTING, SUBSCRIPTION
callbackUrl	String	Yes	Merchant callback URL for protected bank transfer result notification
id(Buyer)	String	Yes	ID of buyer.
name(Buyer)	String	Yes	Name of buyer
surname(Buyer)	String	Yes	Surname of buyer
identityNumber(Buyer)	String	Yes	Identity number of buyer. TCKN for Turkish merchants, passport number for foreign merchants
city(Buyer)	String	Yes	City of buyer
country(Buyer)	String	Yes	Country of buyer
email(Buyer)	String	Yes	Email of buyer
gsmNumber(Buyer)	String	No	GSM number of buyer
ip(Buyer)	String	Yes	IP of buyer
registrationAddress(Buyer)	String	Yes	Registration address of buyer
zipCode(Buyer)	String	No	Zip code of buyer
registrationDate(Buyer)	String	No	Registration date of buyer. Format should be “2015-09-17 23:45:06”
lastLoginDate(Buyer)	String	No	Last login date of buyer. Format should be “2015-09-17 23:45:06”
contactName(BillingAddress)	String	Yes	Contact name of billing address
city(BillingAddress)	String	Yes	City of billing address
country(BillingAddress)	String	Yes	Country of billing address
address(BillingAddress)	String	Yes	Address name of billing address
zipCode(BillingAddress)	String	No	Zip code of billing address
contactName(ShippingAddress)	String	Yes	Contact name of shipping adress. If one of the itemType in basket is PHYSICAL, then this parameter will be mandatory
city(ShippingAddress)	String	Yes	City of shipping adress. If one of the itemType in basket is PHYSICAL, then this parameter will be mandatory
country(ShippingAddress)	String	Yes	Country of shipping adress. If one of the itemType in basket is PHYSICAL, then this parameter will be mandatory
address(ShippingAddress)	String	Yes	Address of shipping adress. If one of the itemType in basket is PHYSICAL, then this parameter will be mandatory
zipCode(ShippingAddress)	String	No	Zip code of shipping adress
id(BasketItem)	String	Yes	Basket Item ID. Note. Basket items cannot be more than 500
itemType(BasketItem)	String	Yes	Item Type. Valid values are PHYSICAL,VIRTUAL
name(BasketItem)	String	Yes	Name of the item in the basket
category1(BasketItem)	String	Yes	Category 1 for item in the basket.
category2(BasketItem)	String	No	Category 2 for item in the basket.
price(BasketItem)	Decimal	Yes	Price value for each item. Must be greater than zero.

Parameters to be returned

Parametre ismi	Tip	Açıklama
checkoutFormContent	string	HTML code of checkout form.
paymentPageUrl	string	URL of protected bank transfer page.
token	string	Unique value created for each checkout form / protected bank transfer request. This token is used to access the payment result. After payment matches, this token returns payment details. Before payment matches, requesting this token will return a status INIT_BANK_TRANSFER
tokenExpireTime	Integer	Expiration time of the token
status	string	Service response result (success / failure)
errorCode	string	Error code if service response status is failure
errorMessage	string	Error message if service response status is failure
errorGroup	string	Error group if service response status is failure
locale	string	Language (default: tr)
systemTime	integer	Response system timestamp value
conversationId	string	If set, conversation ID to match request and response

$request = new \Iyzipay\Request\CreateCheckoutFormInitializeRequest();
$request->setLocale(\Iyzipay\Model\Locale::TR);
$request->setConversationId("123456789");
$request->setPrice("1");
$request->setPaidPrice("1.2");
$request->setCurrency(\Iyzipay\Model\Currency::TL);
$request->setBasketId("B67832");
$request->setPaymentGroup(\Iyzipay\Model\PaymentGroup::PRODUCT);
$request->setCallbackUrl("https://www.merchant.com/callback");
$request->setEnabledInstallments(array(2, 3, 6, 9));

$buyer = new \Iyzipay\Model\Buyer();
$buyer->setId("BY789");
$buyer->setName("John");
$buyer->setSurname("Doe");
$buyer->setGsmNumber("+905350000000");
$buyer->setEmail("email@email.com");
$buyer->setIdentityNumber("74300864791");
$buyer->setLastLoginDate("2015-10-05 12:43:35");
$buyer->setRegistrationDate("2013-04-21 15:12:09");
$buyer->setRegistrationAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
$buyer->setIp("85.34.78.112");
$buyer->setCity("Istanbul");
$buyer->setCountry("Turkey");
$buyer->setZipCode("34732");

$request->setBuyer($buyer);
$shippingAddress = new \Iyzipay\Model\Address();
$shippingAddress->setContactName("Jane Doe");
$shippingAddress->setCity("Istanbul");
$shippingAddress->setCountry("Turkey");
$shippingAddress->setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
$shippingAddress->setZipCode("34742");
$request->setShippingAddress($shippingAddress);

$billingAddress = new \Iyzipay\Model\Address();
$billingAddress->setContactName("Jane Doe");
$billingAddress->setCity("Istanbul");
$billingAddress->setCountry("Turkey");
$billingAddress->setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
$billingAddress->setZipCode("34742");
$request->setBillingAddress($billingAddress);

$basketItems = array();
$firstBasketItem = new \Iyzipay\Model\BasketItem();
$firstBasketItem->setId("BI101");
$firstBasketItem->setName("Binocular");
$firstBasketItem->setCategory1("Collectibles");
$firstBasketItem->setCategory2("Accessories");
$firstBasketItem->setItemType(\Iyzipay\Model\BasketItemType::PHYSICAL);
$firstBasketItem->setPrice("0.3");
$basketItems[0] = $firstBasketItem;

$secondBasketItem = new \Iyzipay\Model\BasketItem();
$secondBasketItem->setId("BI102");
$secondBasketItem->setName("Game code");
$secondBasketItem->setCategory1("Game");
$secondBasketItem->setCategory2("Online Game Items");
$secondBasketItem->setItemType(\Iyzipay\Model\BasketItemType::VIRTUAL);
$secondBasketItem->setPrice("0.5");

$basketItems[1] = $secondBasketItem;
$thirdBasketItem = new \Iyzipay\Model\BasketItem();
$thirdBasketItem->setId("BI103");
$thirdBasketItem->setName("Usb");
$thirdBasketItem->setCategory1("Electronics");
$thirdBasketItem->setCategory2("Usb / Cable");
$thirdBasketItem->setItemType(\Iyzipay\Model\BasketItemType::PHYSICAL);
$thirdBasketItem->setPrice("0.2");
$basketItems[2] = $thirdBasketItem;
$request->setBasketItems($basketItems);

$checkoutFormInitialize = \Iyzipay\Model\CheckoutFormInitialize::create($request, Config::options());

CreateCheckoutFormInitializeRequest request = new CreateCheckoutFormInitializeRequest();
request.Locale = Locale.TR.ToString();
request.ConversationId = "123456789";
request.Price = "1";
request.PaidPrice = "1.2";
request.Currency = Currency.TRY.ToString();
request.BasketId = "B67832";
request.PaymentGroup = PaymentGroup.PRODUCT.ToString();
request.CallbackUrl = "https://www.merchant.com/callback";

List<int> enabledInstallments = new List<int>();
enabledInstallments.Add(2);
enabledInstallments.Add(3);
enabledInstallments.Add(6);
enabledInstallments.Add(9);
request.EnabledInstallments = enabledInstallments;

Buyer buyer = new Buyer();
buyer.Id = "BY789";
buyer.Name = "John";
buyer.Surname = "Doe";
buyer.GsmNumber = "+905350000000";
buyer.Email = "email@email.com";
buyer.IdentityNumber = "74300864791";
buyer.LastLoginDate = "2015-10-05 12:43:35";
buyer.RegistrationDate = "2013-04-21 15:12:09";
buyer.RegistrationAddress = "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1";
buyer.Ip = "85.34.78.112";
buyer.City = "Istanbul";
buyer.Country = "Turkey";
buyer.ZipCode = "34732";
request.Buyer = buyer;

Address shippingAddress = new Address();
shippingAddress.ContactName = "Jane Doe";
shippingAddress.City = "Istanbul";
shippingAddress.Country = "Turkey";
shippingAddress.Description = "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1";
shippingAddress.ZipCode = "34742";
request.ShippingAddress = shippingAddress;

Address billingAddress = new Address();
billingAddress.ContactName = "Jane Doe";
billingAddress.City = "Istanbul";
billingAddress.Country = "Turkey";
billingAddress.Description = "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1";
billingAddress.ZipCode = "34742";
request.BillingAddress = billingAddress;

List<BasketItem> basketItems = new List<BasketItem>();
BasketItem firstBasketItem = new BasketItem();
firstBasketItem.Id = "BI101";
firstBasketItem.Name = "Binocular";
firstBasketItem.Category1 = "Collectibles";
firstBasketItem.Category2 = "Accessories";
firstBasketItem.ItemType = BasketItemType.PHYSICAL.ToString();
firstBasketItem.Price = "0.3";
basketItems.Add(firstBasketItem);

BasketItem secondBasketItem = new BasketItem();
secondBasketItem.Id = "BI102";
secondBasketItem.Name = "Game code";
secondBasketItem.Category1 = "Game";
secondBasketItem.Category2 = "Online Game Items";
secondBasketItem.ItemType = BasketItemType.VIRTUAL.ToString();
secondBasketItem.Price = "0.5";
basketItems.Add(secondBasketItem);

BasketItem thirdBasketItem = new BasketItem();
thirdBasketItem.Id = "BI103";
thirdBasketItem.Name = "Usb";
thirdBasketItem.Category1 = "Electronics";
thirdBasketItem.Category2 = "Usb / Cable";
thirdBasketItem.ItemType = BasketItemType.PHYSICAL.ToString();
thirdBasketItem.Price = "0.2";
basketItems.Add(thirdBasketItem);
request.BasketItems = basketItems;

CheckoutFormInitialize checkoutFormInitialize = CheckoutFormInitialize.Create(request, options);

CreateCheckoutFormInitializeRequest request = new CreateCheckoutFormInitializeRequest();
request.setLocale(Locale.TR.getValue());
request.setConversationId("123456789");
request.setPrice(new BigDecimal("1"));
request.setPaidPrice(new BigDecimal("1.2"));
request.setCurrency(Currency.TRY.name());
request.setBasketId("B67832");
request.setPaymentGroup(PaymentGroup.PRODUCT.name());
request.setCallbackUrl("https://www.merchant.com/callback");

List<Integer> enabledInstallments = new ArrayList<Integer>();
enabledInstallments.add(2);
enabledInstallments.add(3);
enabledInstallments.add(6);
enabledInstallments.add(9);
request.setEnabledInstallments(enabledInstallments);

Buyer buyer = new Buyer();
buyer.setId("BY789");
buyer.setName("John");
buyer.setSurname("Doe");
buyer.setGsmNumber("+905350000000");
buyer.setEmail("email@email.com");
buyer.setIdentityNumber("74300864791");
buyer.setLastLoginDate("2015-10-05 12:43:35");
buyer.setRegistrationDate("2013-04-21 15:12:09");
buyer.setRegistrationAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
buyer.setIp("85.34.78.112");
buyer.setCity("Istanbul");
buyer.setCountry("Turkey");
buyer.setZipCode("34732");
request.setBuyer(buyer);

Address shippingAddress = new Address();
shippingAddress.setContactName("Jane Doe");
shippingAddress.setCity("Istanbul");
shippingAddress.setCountry("Turkey");
shippingAddress.setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
shippingAddress.setZipCode("34742");
request.setShippingAddress(shippingAddress);

Address billingAddress = new Address();
billingAddress.setContactName("Jane Doe");
billingAddress.setCity("Istanbul");
billingAddress.setCountry("Turkey");
billingAddress.setAddress("Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1");
billingAddress.setZipCode("34742");
request.setBillingAddress(billingAddress);

List<BasketItem> basketItems = new ArrayList<BasketItem>();
BasketItem firstBasketItem = new BasketItem();
firstBasketItem.setId("BI101");
firstBasketItem.setName("Binocular");
firstBasketItem.setCategory1("Collectibles");
firstBasketItem.setCategory2("Accessories");
firstBasketItem.setItemType(BasketItemType.PHYSICAL.name());
firstBasketItem.setPrice(new BigDecimal("0.3"));
basketItems.add(firstBasketItem);

BasketItem secondBasketItem = new BasketItem();
secondBasketItem.setId("BI102");
secondBasketItem.setName("Game code");
secondBasketItem.setCategory1("Game");
secondBasketItem.setCategory2("Online Game Items");
secondBasketItem.setItemType(BasketItemType.VIRTUAL.name());
secondBasketItem.setPrice(new BigDecimal("0.5"));
basketItems.add(secondBasketItem);

BasketItem thirdBasketItem = new BasketItem();
thirdBasketItem.setId("BI103");
thirdBasketItem.setName("Usb");
thirdBasketItem.setCategory1("Electronics");
thirdBasketItem.setCategory2("Usb / Cable");
thirdBasketItem.setItemType(BasketItemType.PHYSICAL.name());
thirdBasketItem.setPrice(new BigDecimal("0.2"));
basketItems.add(thirdBasketItem);
request.setBasketItems(basketItems);

CheckoutFormInitialize checkoutFormInitialize = CheckoutFormInitialize.create(request, options);

var request = {
    locale: Iyzipay.LOCALE.TR,
    conversationId: '123456789',
    price: '1',
    paidPrice: '1.2',
    currency: Iyzipay.CURRENCY.TRY,
    basketId: 'B67832',
    paymentGroup: Iyzipay.PAYMENT_GROUP.PRODUCT,
    callbackUrl: 'https://www.merchant.com/callback',
    enabledInstallments: [2, 3, 6, 9],
    buyer: {
        id: 'BY789',
        name: 'John',
        surname: 'Doe',
        gsmNumber: '+905350000000',
        email: 'email@email.com',
        identityNumber: '74300864791',
        lastLoginDate: '2015-10-05 12:43:35',
        registrationDate: '2013-04-21 15:12:09',
        registrationAddress: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
        ip: '85.34.78.112',
        city: 'Istanbul',
        country: 'Turkey',
        zipCode: '34732'
    },
    shippingAddress: {
        contactName: 'Jane Doe',
        city: 'Istanbul',
        country: 'Turkey',
        address: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
        zipCode: '34742'
    },
    billingAddress: {
        contactName: 'Jane Doe',
        city: 'Istanbul',
        country: 'Turkey',
        address: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
        zipCode: '34742'
    },
    basketItems: [
        {
            id: 'BI101',
            name: 'Binocular',
            category1: 'Collectibles',
            category2: 'Accessories',
            itemType: Iyzipay.BASKET_ITEM_TYPE.PHYSICAL,
            price: '0.3'
        },
        {
            id: 'BI102',
            name: 'Game code',
            category1: 'Game',
            category2: 'Online Game Items',
            itemType: Iyzipay.BASKET_ITEM_TYPE.VIRTUAL,
            price: '0.5'
        },
        {
            id: 'BI103',
            name: 'Usb',
            category1: 'Electronics',
            category2: 'Usb / Cable',
            itemType: Iyzipay.BASKET_ITEM_TYPE.PHYSICAL,
            price: '0.2'
        }
    ]
};

iyzipay.checkoutFormInitialize.create(request, function (err, result) {
    console.log(err, result);
    done();
});

buyer = {
    id: 'BY789',
    name: 'John',
    surname: 'Doe',
    identityNumber: '74300864791',
    email: 'email@email.com',
    gsmNumber: '+905350000000',
    registrationDate: '2013-04-21 15:12:09',
    lastLoginDate: '2015-10-05 12:43:35',
    registrationAddress: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
    city: 'Istanbul',
    country: 'Turkey',
    zipCode: '34732',
    ip: '85.34.78.112'
}
address = {
    address: 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1',
    zipCode: '34732',
    contactName: 'John Doe',
    city: 'Istanbul',
    country: 'Turkey'
}

item1 = {
    id: 'BI101',
    name: 'Binocular',
    category1: 'Collectibles',
    category2: 'Accessories',
    itemType: Iyzipay::Model::BasketItemType::PHYSICAL,
    price: '0.3',
    subMerchantKey: 'sub merchant key',
    subMerchantPrice: '0.27'
}
item2 = {
    id: 'BI102',
    name: 'Game code',
    category1: 'Game',
    category2: 'Online Game Items',
    itemType: Iyzipay::Model::BasketItemType::VIRTUAL,
    price: '0.5',
    subMerchantKey: 'sub merchant key',
    subMerchantPrice: '0.42'
}
item3 = {
    id: 'BI103',
    name: 'Usb',
    category1: 'Electronics',
    category2: 'Usb / Cable',
    itemType: Iyzipay::Model::BasketItemType::PHYSICAL,
    price: '0.2',
    subMerchantKey: 'sub merchant key',
    subMerchantPrice: '0.18'
}
request = {
    locale: 'tr',
    conversationId: '123456789',
    price: '1.0',
    paidPrice: '1.0',
    basketId: 'B67832',
    paymentGroup: Iyzipay::Model::PaymentGroup::PRODUCT,
    callbackUrl: 'https://www.merchant.com/callback',
    enabledInstallments: [2,3,6,9],
    currency: Iyzipay::Model::Currency::TRY,
    buyer: buyer,
    billingAddress: address,
    shippingAddress: address,
    basketItems: [item1, item2, item3]
}
checkout_form_initialize = Iyzipay::Model::CheckoutFormInitialize.new.create(request, @options)

request = dict([('locale', 'tr')])
request['conversationId'] = '123456789'
request['price'] = '1'
request['paidPrice'] = '1.2'
request['basketId'] = 'B67832'
request['paymentGroup'] = 'PRODUCT'
request['callbackUrl'] = 'https://www.merchant.com/callback'

buyer = dict([('id', 'BY789')])
buyer['name'] = 'John'
buyer['surname'] = 'Doe'
buyer['gsmNumber'] = '+905350000000'
buyer['email'] = 'email@email.com'
buyer['identityNumber'] = '74300864791'
buyer['lastLoginDate'] = '2015-10-05 12:43:35'
buyer['registrationDate'] = '2013-04-21 15:12:09'
buyer['registrationAddress'] = 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1'
buyer['ip'] = '85.34.78.112'
buyer['city'] = 'Istanbul'
buyer['country'] = 'Turkey'
buyer['zipCode'] = '34732'
request['buyer'] = buyer

address = dict([('address', 'Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1')])
address['zipCode'] = '34732'
address['contactName'] = 'Jane Doe'
address['city'] = 'Istanbul'
address['country'] = 'Turkey'
request['shippingAddress'] = address
request['billingAddress'] = address

basket_items = []
basket_item_first = dict([('id', 'BI101')])
basket_item_first['name'] = 'Binocular'
basket_item_first['category1'] = 'Collectibles'
basket_item_first['category2'] = 'Accessories'
basket_item_first['itemType'] = 'PHYSICAL'
basket_item_first['price'] = '0.3'
basket_item_first['subMerchantKey'] = 'sub merchant key'
basket_item_first['subMerchantPrice'] = '0.27'
basket_items.append(basket_item_first)

basket_item_second = dict([('id', 'BI102')])
basket_item_second['name'] = 'Game code'
basket_item_second['category1'] = 'Game'
basket_item_second['category2'] = 'Online Game Items'
basket_item_second['itemType'] = 'VIRTUAL'
basket_item_second['price'] = '0.5'
basket_item_second['subMerchantKey'] = 'sub merchant key'
basket_item_second['subMerchantPrice'] = '0.42'
basket_items.append(basket_item_second)

basket_item_third = dict([('id', 'BI103')])
basket_item_third['name'] = 'Usb'
basket_item_third['category1'] = 'Electronics'
basket_item_third['category2'] = 'Usb / Cable'
basket_item_third['itemType'] = 'PHYSICAL'
basket_item_third['price'] = '0.2'
basket_item_third['subMerchantKey'] = 'sub merchant key'
basket_item_third['subMerchantPrice'] = '0.18'
basket_items.append(basket_item_third)

request['basketItems'] = basket_items

checkout_form_initialize = iyzipay.CheckoutFormInitialize()
checkout_form_initialize_response = checkout_form_initialize.create(request, options)

//Request
{
    "locale": "tr",
    "conversationId": "123456789",
    "price": "1.0",
    "basketId": "B67832",
    "paymentGroup": "PRODUCT",
    "buyer": {
        "id": "BY789",
        "name": "John",
        "surname": "Doe",
        "identityNumber": "74300864791",
        "email": "email@email.com",
        "gsmNumber": "+905350000000",
        "registrationDate": "2013-04-21 15:12:09",
        "lastLoginDate": "2015-10-05 12:43:35",
        "registrationAddress": "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1",
        "city": "Istanbul",
        "country": "Turkey",
        "zipCode": "34732",
        "ip": "85.34.78.112"
    },
    "shippingAddress": {
        "address": "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1",
        "zipCode": "34742",
        "contactName": "Jane Doe",
        "city": "Istanbul",
        "country": "Turkey"
    },
    "billingAddress": {
        "address": "Nidakule Göztepe, Merdivenköy Mah. Bora Sok. No:1",
        "zipCode": "34742",
        "contactName": "Jane Doe",
        "city": "Istanbul",
        "country": "Turkey"
    },
    "basketItems": [
        {
            "id": "BI101",
            "price": "0.3",
            "name": "Binocular",
            "category1": "Collectibles",
            "category2": "Accessories",
            "itemType": "PHYSICAL"
        },
        {
            "id": "BI102",
            "price": "0.5",
            "name": "Game code",
            "category1": "Game",
            "category2": "Online Game Items",
            "itemType": "VIRTUAL"
        },
        {
            "id": "BI103",
            "price": "0.2",
            "name": "Usb",
            "category1": "Electronics",
            "category2": "Usb / Cable",
            "itemType": "PHYSICAL"
        }
    ],
    "callbackUrl": "https://www.merchant.com/callback",
    "currency": "TRY",
    "paidPrice": "1.2",
    "enabledInstallments": [
        1,
        2,
        3,
        6,
        9
    ]
}

//Response
{
    "status": "success",
    "locale": "tr",
    "systemTime": 1470731039071,
    "conversationId": "123456789",
    "token": "d9a1d90e-7cfb-4ead-a6ec-34237bac04f0",
    "checkoutFormContent": "<script type=\"text/javascript\">if (typeof iyziInit == 'undefined') {var iyziInit = {currency:'TRY',token:'d9a1d90e-7cfb-4ead-a6ec-34237bac04f0',price:1.20,locale:'tr',baseUrl:'https://sandbox-api.iyzipay.com',registerCardEnabled:true,bkmEnabled:true,userCards:[],force3Ds:false, isSandbox:true, createTag:function(){var iyziCSSTag = document.createElement('link');iyziCSSTag.setAttribute('rel','stylesheet');iyziCSSTag.setAttribute('type','text/css');iyziCSSTag.setAttribute('href','https://sandbox-static.iyzipay.com/checkoutform/css/main.min.css?v=1470731039031');document.head.appendChild(iyziCSSTag);var iyziJSTag = document.createElement('script');iyziJSTag.setAttribute('src','https://sandbox-static.iyzipay.com/checkoutform/js/iyziCheckout.min.js?v=1470731039031');document.head.appendChild(iyziJSTag);}};iyziInit.createTag();}</script>",
    "tokenExpireTime": 1800,
    "paymentPageUrl": "https://sandbox-cpp.iyzipay.com?token=d9a1d90e-7cfb-4ead-a6ec-34237bac04f0&lang=tr"
}

Sample Codes

Protected Bank Transfer Woocommerce beta plugin can be downloaded from the link.