# answerPreCheckoutQuery

Source: https://core.telegram.org/bots/api#answerprecheckoutquery

[Documentation index](../llms.txt)

Once the user has confirmed their payment and shipping details, the Bot API sends the final confirmation in the form of an [Update](update.md) with the field *pre\_checkout\_query*. Use this method to respond to such pre-checkout queries. On success, *True* is returned. **Note:** The Bot API must receive an answer within 10 seconds after the pre-checkout query was sent.

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| pre\_checkout\_query\_id | String | Yes | Unique identifier for the query to be answered |
| ok | Boolean | Yes | Specify *True* if everything is alright (goods are available, etc.) and the bot is ready to proceed with the order. Use *False* if there are any problems. |
| error\_message | String | Optional | Required if *ok* is *False*. Error message in human readable form that explains the reason for failure to proceed with the checkout (e.g. "Sorry, somebody just bought the last of our amazing black T-shirts while you were busy filling out your payment details. Please choose a different color or garment!"). Telegram will display this message to the user. |