409 Conflict - Session Expired
Indicates checkout session has reached it's expiration point. Initiate a new checkout.
{
"type": "https://developer.sumup.com/docs/problem/session-expired/",
"title": "Conflict",
"status": 409,
"detail": "The checkout session ae98b9cc-2287-4621-afa1-d36ae2ea219d is already processed",
"instance": "1bfe72b34387"
}