> For the complete documentation index, see [llms.txt](https://developers-apps-in-toss.toss.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers-apps-in-toss.toss.im/documentation/api-and-sdk-en/sdk/domains-api/iap/iap.createonetimepurchaseorder.md). # IAP.createOneTimePurchaseOrder ### Feature description We're moving to the single-item in-app purchase order page. The payment and product grant flow is `options` / `onEvent` / `onError` handled with event-style options. * `options.sku`: This is the ID of the product to order. (`productId`is deprecated) * `options.processProductGrant`: Called when granting the product after the order is created. Returns whether the grant succeeded `true`/`false`(or a Promise). * `onEvent`: When payment succeeds, `type: 'success'`is called with the result data. * `onError`: Called if an error occurs during payment. The returned cleanup function must be called when the in-app purchase feature is finished to release resources. Toss app Android/iOS `5.219.0` It can be used on versions above. If called in an unsupported version, `UNSUPPORTED_APP_VERSION` an error occurs. ### Type ```ts IAP.createOneTimePurchaseOrder(params: IapCreateOneTimePurchaseOrderOptions): () => void; ``` **Params** ```ts interface IapCreateOneTimePurchaseOrderOptions { options: { sku: string; /** @deprecated Use sku */ productId?: string; processProductGrant: (params: { orderId: string; }) => boolean | Promise; }; onEvent: (event: { type: "success"; data: IapCreateOneTimePurchaseOrderResult; }) => void | Promise; onError: (error: unknown) => void | Promise; } interface IapCreateOneTimePurchaseOrderResult { orderId: string; displayName: string; displayAmount: string; amount: number; currency: string; fraction: number; miniAppIconUrl: string | null; } ``` **Response** Returns a cleanup function to release resources when the payment flow ends (`() => void`). ### Error Error codes are `onError`can be received as, or wrapped around the `try/catch`errors caught in `error.code` value. | Code | Description | | --------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `INVALID_PRODUCT_ID` | This is when the product ID is invalid or the product does not exist. | | `PAYMENT_PENDING` | This is when payment is still awaiting approval. | | `NETWORK_ERROR` | This is when the request cannot be processed due to network/server issues. | | `INVALID_USER_ENVIRONMENT` | This is when the product cannot be purchased on a specific device, account, or setting. | | `ITEM_ALREADY_OWNED` | This is when you try to purchase a product you already bought. | | `APP_MARKET_VERIFICATION_FAILED` | This is when payment succeeded but app store verification failed. | | `TOSS_SERVER_VERIFICATION_FAILED` | This is when payment succeeded but sending to or saving on the server failed. | | `INTERNAL_ERROR` | This is when the request cannot be processed due to an internal server issue. | | `KOREAN_ACCOUNT_ONLY` | This is when the account is not a Korean account on iOS. | | `USER_CANCELED` | This is when the user leaves the order page. | | `PRODUCT_NOT_GRANTED_BY_PARTNER` | This is when the partner's product grant failed. | | `UNSUPPORTED_APP_VERSION` | If the running version of the Toss app doesn't support this feature, it occurs immediately upon call. `IAP.createOneTimePurchaseOrder.isSupported()`Check in advance with `error.message`and, if it occurs, show the user the (update guidance message). | ### Example code ```js import { IAP } from "@apps-in-toss/web-framework"; const button = document.querySelector("#buy-button"); let cleanup; button.addEventListener("click", () => { try { cleanup = IAP.createOneTimePurchaseOrder({ options: { sku: "coin_100", processProductGrant: ({ orderId }) => { // Write the product grant logic console.log("Grant processed:", orderId); return true; }, }, onEvent: (event) => { console.log(event.type, event.data); }, onError: (error) => { console.error(error); }, }); } catch (error) { console.error(error); } }); // cleanup?.() when leaving the screen ``` --- # Agent Instructions This documentation is published with GitBook. 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