Before History

A horizon server may be configured to only keep a portion of the Kuknos network’s history stored within its database. This error will be returned when a client requests a piece of information (such as a page of transactions or a single operation) that the server can positively identify as falling outside the range of recorded history.


As with all errors Horizon returns, before_history follows the Problem Details for HTTP APIs draft specification guide and thus has the following attributes:

Description Type Attribute
The identifier for the error. This is a URL that can be visited in the browser URL Type
A short title describing the error String Title
An HTTP status code that maps to the error Number Status
A more detailed description of the error String Detail
A token that uniquely identifies this request. Allows server administrators to correlate a client report with server log files String Instance