Before History
A Horizon server may be configured to only keep a portion of the stellar network’s history stored within its database.
The before_history error returns a 410 error code and occurs 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.
Example Response for a 'Before History' Status Code
{
  "type": "https://stellar.org/horizon-errors/before_history",
  "title": "Data Requested Is Before Recorded History",
  "status": 410,
  "detail": "This horizon instance is configured to only track a portion of the stellar network's latest history. This request is asking for results prior to the recorded history known to this horizon instance."
}