Select Installment Option for Masterpass REST

Sets the selected installment option for the Masterpass REST flow.

Required Fields:

• installment: Primary key (pk) of the Installment record to apply. The PK must reference an active installment linked to the card resolved in MasterpassRestBinNumberPage.

Validation:

• installment must be the PK of an active Installment belonging to the card in pre_order.card_info. Submitting a PK outside of that set returns a validation error.

State Update:

• pre_order.installment is set to the resolved Installment.

• pre_order.selected_campaign and pre_order.selected_rewards are reset to null (inherited from InstallmentSelectionPage).

• pre_order.payment_choice is reset to null.

Backward Navigation:

• On backward navigation, pre_order.installment is reset to null.

Next Pages:

• MasterpassRestOrderNoPage

available_for_post_order: true

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 (pk) of the Installment record to select. The PK must reference an active installment linked to the card resolved in MasterpassRestBinNumberPage.

Example: 2

Responses

200

Installment selected successfully

application/json

errorsone of · nullableOptional

or

string[]Optional

template_namestringOptional

post/orders/checkout/?page=MasterpassRestInstallmentPage

POST /orders/checkout/?page=MasterpassRestInstallmentPage 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": "MasterpassRestOrderNoPage",
      "page_slug": "masterpassrestordernopage",
      "page_context": {}
    }
  ],
  "pre_order": {
    "payment_option": {
      "pk": 7,
      "slug": "masterpass-rest",
      "payment_type": "masterpass_rest"
    },
    "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",
    "currency_type_label": "TRY"
  },
  "errors": {},
  "template_name": "orders/checkout.html"
}