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.

• Invalid Parameter
• Multiple Invalid Parameters
• Payment Method Not Allowed
• Unknown Payment Method
• Validation Failed
• Bad Request
• Invalid Token
• Missing Token
• Not Authorised Token
• Unauthorized
• Forbidden
• Checkout Not Found
• Not Found
• Session Already Processed
• Session Can’t Be Deactivated
• Session Expired
• Unprocessable Entity
• Internal Server Error
• Gateway Timeout