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Unknown Payment Method

Understand the SumUp API Unknown Payment Method response, common causes, and example payload for unrecognized payment methods.

Indicates the payment method is unknown to SumUp.

Common Causes

Section titled “Common Causes”
  • The payment method value is misspelled or not supported.
  • The method is not returned by the available payment methods endpoint.
  • The method is not enabled for the merchant account.
{
  "type": "https://developer.sumup.com/problem/unknown-payment-method",
  "title": "Bad Request",
  "status": 400,
  "detail": "Unknown payment method: NonExistingPaymentMethod",
  "instance": "7fe5fcddbf28"
}