Checkout payments send checkout events

Pay-in webhooks for payments made through checkout now set event_type to:

• CHECKOUT_COMPLETE when the payment succeeds, or
• CHECKOUT_FAILED when it fails.

Before this change they used IN_FLOW_SUCCESS_EVENT, the same event as other inflows. Pay-ins that are not linked to a checkout still use IN_FLOW_SUCCESS_EVENT. Checkout pay-in payloads also include checkoutReference.

These events were replaced on 22 May 2026; see dedicated checkout webhooks.

What you need to do

If you matched checkout payments on IN_FLOW_SUCCESS_EVENT, also handle CHECKOUT_COMPLETE and CHECKOUT_FAILED.