Errors

Swish uses conventional HTTP response status codes to indicate the success or failure of an API request. As a general rule:

• Status codes in the 2xx range indicate success.

• Status codes in the 4xx range indicate incorrect or incomplete parameters (e.g. a required parameter was omitted).

• Status codes in the 5xx range indicate an error with Swish's servers.

Swish also outputs an error response formatted in JSON:

{
  "error": {
    "message": "Item with ID 123 not found.",​
    "error": "Not Found",
    "statusCode": 404,​
    "requestId": "123e4567-e89b-12d3-a456-426614174000"
  }
}