> For the complete documentation index, see [llms.txt](https://synap.ac/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://synap.ac/docs/platform/portal/checkout.md).

# Checkout

Checkout connects three records: the buyer's Synap account, the payment-provider transaction and the access granted by the Product. A reliable process keeps all three aligned.

### The checkout journey

| Stage         | What happens                                                          | What can go wrong                                                          |
| ------------- | --------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| Account       | The purchase is associated with the person who should receive access. | The buyer signs into the wrong account or creates a duplicate.             |
| Order summary | The Product, amount and currency are confirmed.                       | Storefront and payment information do not match.                           |
| Payment       | The connected provider accepts or declines the transaction.           | Authentication, provider or network issues interrupt the payment.          |
| Confirmation  | The buyer is told whether the purchase succeeded.                     | A page is closed early or success is shown before fulfilment is confirmed. |
| Fulfilment    | Synap grants the access configured on the Product.                    | Payment succeeds but the intended content is not granted.                  |

### Scenarios to test

* Successful payment by a new customer.
* Successful payment by an existing student.
* A declined or cancelled payment.
* Closing the browser during checkout and returning later.
* Repeating the final action or refreshing the confirmation page.
* A refund, chargeback or manually corrected order.
* Payment succeeds but the resulting access needs to be repaired.

{% hint style="warning" %}
For urgent customer support, confirm the payment-provider status and the Synap account separately. Do not ask a customer to pay again until you know whether the first transaction succeeded.
{% endhint %}


---

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