Get BKM Express Installment Selection Page context

Returns the available installment options for the BKM Express payment. Installment options are determined by the card identified in the previous step (BexBinNumberPage).

Preconditions:

• Basket must not be empty

• Card info must have been entered (pre_order.card_info must be set, i.e., BexBinNumberPage must have been completed)

Page Context:

• installments: List of available installment options for the resolved card. Each entry contains pk, installment_count, label, price_with_accrued_interest, and monthly_price_with_accrued_interest calculated against the current unpaid basket amount.

• card_type: Card type details (name, slug, logo), derived from pre_order.card_info.card.card_type.

• installment_messages: List of informational strings returned by InstallmentService (e.g., filter messages or promotion notices).

Installment Filtering:

• InstallmentService.get_pre_order_installments() is called, which applies the INSTALLMENT_FILTERS dynamic setting rules before returning the list.

available_for_post_order: true

get

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>)

Responses

200

BKM Express installment selection page context retrieved

application/json

errorsone of · nullableOptional

or

string[]Optional

template_namestringOptional

get/orders/checkout/?page=BexInstallmentSelectionPage

GET /orders/checkout/?page=BexInstallmentSelectionPage HTTP/1.1
Host: sandbox.akinon.com
x-requested-with: XMLHttpRequest
Accept: */*

200

BKM Express installment selection page context retrieved

{
  "context_list": [
    {
      "page_name": "BexInstallmentSelectionPage",
      "page_slug": "bexinstallmentselectionpage",
      "page_context": {
        "installments": [
          {
            "pk": 1,
            "installment_count": 1,
            "label": "Single Payment",
            "price_with_accrued_interest": "159.99",
            "monthly_price_with_accrued_interest": "159.99"
          },
          {
            "pk": 2,
            "installment_count": 3,
            "label": "3 Installments",
            "price_with_accrued_interest": "165.59",
            "monthly_price_with_accrued_interest": "55.20"
          }
        ],
        "card_type": {
          "name": "Visa",
          "slug": "visa",
          "logo": "https://cdn.akinon.com/logos/visa.png"
        },
        "installment_messages": []
      }
    }
  ],
  "pre_order": {
    "basket": {
      "pk": 123,
      "total_amount": "150.00"
    },
    "payment_option": {
      "pk": 5,
      "name": "BKM Express",
      "slug": "bkm-express",
      "payment_type": "bkm_express",
      "payment_type_label": "BKM Express"
    },
    "number": "ORD-2026-0001",
    "card_info": {
      "bin_number": "542119",
      "card": {
        "pk": 1,
        "name": "Visa"
      }
    },
    "installment": null,
    "total_amount": "159.99",
    "currency_type_label": "TRY"
  },
  "errors": [],
  "template_name": "orders/checkout.html"
}