Problems
This section lists the common error responses that the SumUp API can return. Each page describes the HTTP status code, error structure and suggestions for how to handle it in your integration.
- 400 Bad Request - Invalid Parameter
- 400 Bad Request - Multiple Invalid Parameters
- 400 Bad Request - Payment Method Not Allowed
- 400 Bad Request - Unknown Payment Method
- 400 Bad Request - Validation Failed
- 401 Unauthorised - Invalid Token
- 401 Unauthorised - Missing Token
- 401 Unauthorised - Not Authorised Token
- 403 Forbidden
- 404 Checkout Not Found
- 404 Not Found
- 409 Conflict - Session Already Processed
- 409 Conflict - Session Can’t Be Deactivated
- 409 Conflict - Session Expired
- 422 Unprocessable Entity
- 500 Internal Server Error
- 504 Gateway Timeout