UNSEND_WINDOW_EXPIRED

HTTP status	Retryable
`409`	No

What happened

iMessages can be unsent only within 2 minutes of sending.

How to fix it

Send a follow-up message if you need to correct something.

Example response

An illustrative example. The message wording and the contents of details vary; branch on error.code.

{
  "status": "error",
  "error": {
    "code": "UNSEND_WINDOW_EXPIRED",
    "message": "Unsend window expired",
    "type": "validation",
    "http_status": 409,
    "retryable": false,
    "doc_url": "https://docs.blujay.io/errors/unsend-window-expired",
    "details": []
  },
  "trace_id": "trc_8f2a1c0e4b7d",
  "timestamp": "2026-10-14T17:30:48.000Z"
}

Still stuck?

Email support@blujay.io with the trace_id from the error response. See Errors for the response format.

Overview

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Authentication

Idempotency

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Server and availability

UNSEND_WINDOW_EXPIRED

What happened

How to fix it

Example response

Still stuck?

​What happened

​How to fix it

​Example response

​Still stuck?

What happened

How to fix it

Example response

Still stuck?