In the event that an error occurs while processing a request to horizon, an
error response will be returned to the client. This error response will
contain information detailing why the request couldn’t complete successfully.
Like HAL for successful responses, horizon uses a standard to specify how we
communicate errors to the client. Specifically, horizon uses the Problem
Details for HTTP APIs draft specification. The specification is short, so we recommend
you read it. In summary, when an error occurs on the server we respond with a
json document with the following attributes:
| name |
type |
description |
| type |
url |
The identifier for the error, expressed as a url. Visiting the url in a web browser will redirect you to the additional documentation for the problem. |
| title |
string |
A short title describing the error. |
| status |
number |
An HTTP status code that maps to the error. An error that is triggered due to client input will be in the 400-499 range of status code, for example. |
| detail |
string |
A longer description of the error meant the further explain the error to developers. |
| instance |
string |
A token that uniquely identifies this request. Allows server administrators to correlate a client report with server log files |
Standard Errors
There are a set of errors that can occur in any request to horizon which we
call standard errors. These errors are:
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