> For the complete documentation index, see [llms.txt](https://apidocs.akinon.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.akinon.com/commerce-openapis/checkout/card-payment/select-a-saved-card-for-payment.md). # Select a saved card for payment Submits the saved card to use for the transaction. The card is identified by its token and must belong to the current user and the active payment gateway. The system resolves the card's BIN number to identify the card type and determine the available installment options. If the BIN cannot be matched in the database, the system falls back to the default card configuration. **Gateway-Specific Input**: * **Standard gateways**: Submit `SavedCardSelectionInput`. The `card` field is required and must contain the token displayed in the page context. * **Iyzico gateway**: Submit `IyzicoSavedCardSelectionInput`. The `card` field is optional and carries the token provided by the Iyzico UCS hosted card selection interface. **Required Fields** (standard gateways): * `card`: Token of the saved card to use. **Validation**: * The card token must correspond to an active saved card for the current user and the active payment gateway. **State Update**: * Card information is recorded based on the resolved BIN. * The selected card is stored in the session. **Backward Navigation**: * On backward navigation, the card information and the selected card are cleared. **Next Page**: * `SavedCardInstallmentSelectionPage` **available\_for\_post\_order**: `false` ```json {"openapi":"3.1.0","info":{"title":"Overview","version":"1.0.0"},"tags":[{"name":"Card Payment","description":"# Checkout Card Payment\n\nAccept credit and debit card payments through a multi-step flow covering BIN lookup, installment selection, 3D Secure verification, payment confirmation, saved card selection, and order completion.\n\n## Authentication\n\nThese endpoints support both authenticated and anonymous sessions.\n\n- **Authenticated users**: Session cookie (`sessionid`) tracks checkout progress.\n- **Anonymous users**: Guest checkout is available when the `CAN_GUEST_PURCHASE` setting is enabled.\n## Request Format\n\nInclude the following header in all checkout requests:\n\n- **x-requested-with**: `XMLHttpRequest`\n\n## Dynamic Settings\n\nThe following settings are managed at runtime through the admin interface and do not require a server restart.\n\n### THREE_D_SECURE_ENABLED\nMaster switch for 3D Secure verification. When disabled, 3D Secure is skipped regardless of other rules.\n\n### THREE_D_SECURE_RULES\nRule-based conditions that determine when 3D Secure is required. Rules are evaluated in order; the first match triggers 3D Secure. Only active when `THREE_D_SECURE_ENABLED` is enabled.\n\nAvailable rule types: amount threshold, POS terminal identifier, failed attempt limit per email address, failed attempt limit per IP address, guest user status, first-time purchaser, payment currency.\n\n### INSTALLMENT_FILTERS\nFilters that restrict which installment options are presented. Filters are applied in sequence; each may remove options or stop further filtering.\n\n## Static Settings\n\nThe following settings are configured in the server environment and require a restart to take effect.\n\n### DEFAULT_CARD_SLUG\nFallback card identifier used when a BIN number is submitted but no matching record is found. Defaults to `other`."}],"servers":[{"description":"Akinon Checkout API","url":"https://{commerce_url}","variables":{"commerce_url":{"default":"sandbox.akinon.com"}}}],"paths":{"/orders/checkout/?page=SavedCardSelectionPage":{"post":{"tags":["Card Payment"],"operationId":"submitSavedCardSelection","summary":"Select a saved card for payment","description":"Submits the saved card to use for the transaction. The card is identified by its\ntoken and must belong to the current user and the active payment gateway.\n\nThe system resolves the card's BIN number to identify the card type and determine\nthe available installment options. If the BIN cannot be matched in the database,\nthe system falls back to the default card configuration.\n\n**Gateway-Specific Input**:\n- **Standard gateways**: Submit `SavedCardSelectionInput`. The `card` field is\n required and must contain the token displayed in the page context.\n- **Iyzico gateway**: Submit `IyzicoSavedCardSelectionInput`. The `card` field\n is optional and carries the token provided by the Iyzico UCS hosted card\n selection interface.\n\n**Required Fields** (standard gateways):\n- `card`: Token of the saved card to use.\n\n**Validation**:\n- The card token must correspond to an active saved card for the current user\n and the active payment gateway.\n\n**State Update**:\n- Card information is recorded based on the resolved BIN.\n- The selected card is stored in the session.\n\n**Backward Navigation**:\n- On backward navigation, the card information and the selected card are cleared.\n\n**Next Page**:\n- `SavedCardInstallmentSelectionPage`\n\n**available_for_post_order**: `false`","parameters":[{"$ref":"#/components/parameters/AjaxRequestHeader"},{"$ref":"#/components/parameters/SessionCookieHeader"}],"requestBody":{"required":true,"content":{"application/x-www-form-urlencoded":{"schema":{"oneOf":[{"$ref":"#/components/schemas/SavedCardSelectionInput"},{"$ref":"#/components/schemas/IyzicoSavedCardSelectionInput"}]}}}},"responses":{"200":{"description":"Card selected","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CheckoutResponse"}}}}}}}},"components":{"parameters":{"AjaxRequestHeader":{"name":"x-requested-with","in":"header","required":true,"description":"Required header for AJAX requests. Must be set to `XMLHttpRequest` for all checkout requests.","schema":{"type":"string","enum":["XMLHttpRequest"],"default":"XMLHttpRequest"}},"SessionCookieHeader":{"name":"Cookie","in":"header","required":false,"description":"Session cookie header (e.g. `sessionid=abc123` or `osessionid=`)","schema":{"type":"string"}}},"schemas":{"SavedCardSelectionInput":{"type":"object","description":"Standard saved card selection input, used by all payment gateways except\nIyzico. For the Iyzico gateway, use `IyzicoSavedCardSelectionInput` instead.","required":["card"],"properties":{"card":{"type":"string","description":"Token of the saved card to use for payment. Must correspond to an active\nsaved card linked to the current user and the active payment gateway."}}},"IyzicoSavedCardSelectionInput":{"type":"object","description":"Iyzico gateway input for saved card selection. The card is identified by the\ntoken provided by the Iyzico UCS hosted card selection interface. The `card`\nfield is optional because card identity is managed internally by the Iyzico\nwidget. For all other gateways, use `SavedCardSelectionInput` instead.","properties":{"card":{"type":"string","maxLength":512,"description":"Token provided by the Iyzico UCS hosted card selection interface."}}},"CheckoutResponse":{"type":"object","properties":{"context_list":{"type":"array","items":{"$ref":"#/components/schemas/PageContext"}},"pre_order":{"$ref":"#/components/schemas/PreOrder"},"errors":{"oneOf":[{"type":"object","additionalProperties":{"type":"array","items":{"type":"string"}}},{"type":"null"},{"type":"array","items":{"type":"string"}}]},"template_name":{"type":"string"}}},"PageContext":{"type":"object","properties":{"page_name":{"type":"string","description":"Class name of the page (e.g., \"IndexPage\", \"AddressSelectionPage\")"},"page_slug":{"type":"string","description":"URL-friendly slug for the page"},"page_context":{"type":"object","description":"Page-specific context data","additionalProperties":true}}},"PreOrder":{"type":"object","description":"Pre-order state containing basket, addresses, shipping, payment 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information from BIN lookup","properties":{"bin_number":{"type":"string","description":"Card BIN (first 6-8 digits)"},"card":{"type":"object","description":"Card details from BIN database","properties":{"pk":{"type":"integer"},"name":{"type":"string","description":"Card type name (e.g., \"Visa\", \"Mastercard\")"}}}}},{"type":"null"}]},"redirect_to_three_d":{"oneOf":[{"type":"boolean"},{"type":"null"}]},"delivery_option":{"oneOf":[{"$ref":"#/components/schemas/DeliveryOption"},{"type":"null"}]},"retail_store":{"oneOf":[{"$ref":"#/components/schemas/RetailStore"},{"type":"null"}]},"funds_transfer_bank":{"oneOf":[{"$ref":"#/components/schemas/BankAccount"},{"type":"null"}]},"number":{"oneOf":[{"type":"string","description":"Pre-order/order number"},{"type":"null"}]},"order":{"oneOf":[{"type":"object","description":"Created order (after checkout completion)","properties":{"pk":{"type":"integer"},"number":{"type":"string"},"status":{"type":"string"}}},{"type":"null"}]},"payment_choice":{"oneOf":[{"$ref":"#/components/schemas/PaymentChoice"},{"type":"null"}]},"user_email":{"oneOf":[{"type":"string"},{"type":"null"}]},"phone_number":{"oneOf":[{"type":"string"},{"type":"null"}]},"user_phone_number":{"oneOf":[{"type":"string"},{"type":"null"}]},"gift_box":{"oneOf":[{"type":"object","properties":{"note":{"type":"string"},"gift_video":{"type":"boolean"},"gift_video_notification_sent":{"type":"boolean"},"price":{"type":"string"}}},{"type":"null"}]},"delivery_range":{"oneOf":[{"type":"object","properties":{"lower":{"type":"string","format":"date-time"},"upper":{"type":"string","format":"date-time"}}},{"type":"null"}]},"total_amount_with_interest":{"oneOf":[{"type":"string","pattern":"^\\d+\\.\\d{2}$"},{"type":"null"}]},"is_guest":{"type":"boolean"},"is_post_order":{"type":"boolean"},"data_source_shipping_options":{"oneOf":[{"type":"array","items":{"$ref":"#/components/schemas/DataSourceShippingOptionDetail"}},{"type":"null"}]},"attribute_based_shipping_options":{"oneOf":[{"type":"array","items":{"$ref":"#/components/schemas/PreOrderAttributeBasedShippingOption"}},{"type":"null"}]}}},"Basket":{"type":"object","properties":{"pk":{"type":"integer"},"total_amount":{"type":"string","pattern":"^\\d+\\.\\d{2}$"}}},"Address":{"type":"object","properties":{"pk":{"type":"integer"},"email":{"type":"string"},"phone_number":{"type":"string"},"first_name":{"type":"string"},"last_name":{"type":"string"},"country":{"$ref":"#/components/schemas/Country"},"city":{"$ref":"#/components/schemas/City"},"line":{"type":"string"},"title":{"type":"string"},"township":{"$ref":"#/components/schemas/Township"},"district":{"oneOf":[{"$ref":"#/components/schemas/District"},{"type":"null"}]},"postcode":{"type":"string"},"notes":{"type":"string"},"company_name":{"type":"string"},"tax_office":{"type":"string"},"tax_no":{"type":"string"},"e_bill_taxpayer":{"type":"boolean"},"is_corporate":{"type":"boolean"},"primary":{"type":"boolean"},"identity_number":{"type":"string"}}},"Country":{"type":"object","properties":{"pk":{"type":"integer"},"code":{"type":"string"},"name":{"type":"string"}}},"City":{"type":"object","properties":{"pk":{"type":"integer"},"name":{"type":"string"}}},"Township":{"type":"object","properties":{"pk":{"type":"integer"},"name":{"type":"string"}}},"District":{"type":"object","properties":{"pk":{"type":"integer"},"name":{"type":"string"}}},"ShippingOptionDetail":{"type":"object","description":"Detailed shipping option with calculated amount","properties":{"pk":{"type":"integer"},"name":{"type":"string"},"slug":{"type":"string"},"logo":{"oneOf":[{"type":"string","format":"uri"},{"type":"null"}]},"shipping_amount":{"type":"string","pattern":"^\\d+\\.\\d{2}$"},"description":{"oneOf":[{"type":"string"},{"type":"null"}]},"kwargs":{"type":"object","additionalProperties":true}}},"PaymentOptionDetail":{"type":"object","description":"Detailed payment option with type information","properties":{"pk":{"type":"integer"},"name":{"type":"string"},"slug":{"type":"string"},"payment_type":{"type":"string","enum":["credit_card","funds_transfer","bkm_express","loyalty_money","cash_register","gpay","redirection","stored_card","masterpass","masterpass_rest","credit_payment","pay_later","saved_card","confirmation","b2b","wallet","pay_on_delivery"]},"payment_type_label":{"type":"string"}}},"Installment":{"type":"object","properties":{"pk":{"type":"integer"},"installment_count":{"type":"integer"},"label":{"type":"string"},"price_with_accrued_interest":{"type":"string","pattern":"^\\d+\\.\\d{2}$"},"monthly_price_with_accrued_interest":{"type":"string","pattern":"^\\d+\\.\\d{2}$"}}},"DeliveryOption":{"type":"object","properties":{"pk":{"type":"integer"},"name":{"type":"string"},"delivery_option_type":{"type":"string","enum":["customer","retail_store","pickup_location"]},"is_active":{"type":"boolean"}}},"RetailStore":{"type":"object","properties":{"pk":{"type":"integer"},"name":{"type":"string"},"erp_code":{"type":"string"},"township":{"$ref":"#/components/schemas/Township"},"click_and_collect":{"type":"boolean"},"is_active":{"type":"boolean"}}},"BankAccount":{"type":"object","description":"Bank account for funds transfer payments","properties":{"pk":{"type":"integer"},"bank_name":{"type":"string","description":"Name of the bank"},"account_holder":{"type":"string","description":"Account holder name"},"iban":{"type":"string","description":"International Bank Account Number"},"currency":{"type":"string","description":"Currency code (e.g., \"USD\", \"EUR\", \"TRY\")"},"is_active":{"type":"boolean"}}},"PaymentChoice":{"type":"object","properties":{"value":{"type":"string"},"label":{"type":"string"},"price":{"type":"string","pattern":"^\\d+\\.\\d{2}$"}}},"DataSourceShippingOptionDetail":{"type":"object","description":"Data source shipping option for multi-vendor shipping","properties":{"pk":{"type":"integer"},"shipping_amount":{"type":"string","pattern":"^\\d+\\.\\d{2}$"},"shipping_option_name":{"type":"string"},"shipping_option_logo":{"oneOf":[{"type":"string","format":"uri"},{"type":"null"}]},"data_source":{"type":"object","properties":{"pk":{"type":"integer"},"title":{"type":"string"}}},"description":{"oneOf":[{"type":"string"},{"type":"null"}]}}},"PreOrderAttributeBasedShippingOption":{"type":"object","description":"Attribute-based shipping option selected for a product group","properties":{"pk":{"type":"integer"},"shipping_option_name":{"type":"string"},"shipping_option_logo":{"oneOf":[{"type":"string","format":"uri"},{"type":"null"}]},"shipping_amount":{"type":"string","pattern":"^\\d+\\.\\d{2}$"},"product_ids":{"type":"array","items":{"type":"integer"}},"attribute_value":{"type":"string"},"attribute_key":{"oneOf":[{"type":"array","items":{"type":"string"}},{"type":"null"}]}}}}}} ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://apidocs.akinon.com/commerce-openapis/checkout/card-payment/select-a-saved-card-for-payment.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.