Select Installment Option

Sets the selected installment option for the credit card payment.

Validation:

• Selected installment must belong to the card's available installments

• Installment must be active

Interest Calculation:

• Total amount is recalculated with selected installment's interest rate

• Monthly payment amount is calculated (total / installment_count)

• Interest-free installments may be available based on campaigns

Selected Campaign/Rewards Reset:

• Selecting an installment clears previously selected campaigns

• Clears previously selected rewards

• Campaigns and rewards are re-evaluated based on new total with interest

Next Pages:

• CreditCardConfirmationPage

post

Header parameters

x-requested-withstring · enumRequired

Required header for AJAX requests. Must be set to XMLHttpRequest for all checkout requests.

Default: XMLHttpRequestPossible values:

CookiestringOptional

Session cookie header (e.g. sessionid=abc123 or osessionid=<session_id>)

Body

installmentintegerRequired

Primary key of the selected installment option. Must be one of the installments available for the card. Installment count of 1 represents single payment (no installment).

Responses

200

Installment selected successfully

application/json

errorsone of · nullableOptional

or

string[]Optional

template_namestringOptional

post/orders/checkout/?page=InstallmentSelectionPage

POST /orders/checkout/?page=InstallmentSelectionPage HTTP/1.1
Host: sandbox.akinon.com
x-requested-with: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded
Accept: */*
Content-Length: 17

"installment=1"

200

Installment selected successfully

{
  "context_list": [
    {
      "page_name": "CreditCardConfirmationPage",
      "page_slug": "creditcardconfirmationpage",
      "page_context": {
        "has_campaigns": true,
        "has_rewards": false
      }
    }
  ],
  "pre_order": {
    "basket": {
      "pk": 123,
      "total_amount": "150.00"
    },
    "shipping_address": {
      "pk": 10,
      "first_name": "John",
      "last_name": "Doe"
    },
    "billing_address": {
      "pk": 10,
      "first_name": "John",
      "last_name": "Doe"
    },
    "payment_option": {
      "pk": 1,
      "name": "Credit Card",
      "slug": "credit-card",
      "payment_type": "credit_card",
      "payment_type_label": "Credit Card"
    },
    "card_info": {
      "bin_number": "542119",
      "card": {
        "pk": 1,
        "name": "Visa"
      }
    },
    "installment": {
      "pk": 2,
      "installment_count": 3,
      "label": "3 Installments",
      "price_with_accrued_interest": "165.59",
      "monthly_price_with_accrued_interest": "55.20"
    },
    "total_amount": "165.59",
    "total_amount_with_interest": "165.59",
    "unpaid_amount": "165.59",
    "currency_type_label": "USD"
  },
  "errors": {},
  "template_name": "orders/checkout.html"
}