# `flights.schedule_change_not_supported` — Schedule change reply not supported

**HTTP status:** 409  
**Retryable:** no — change the request or the flow first

## When it happens

The airline for this booking does not accept schedule-change replies through the API.

## What to do

Contact support to handle this schedule change.

## Example response

```json
{
  "type": "https://quickota.com/developers/errors/flights.schedule_change_not_supported",
  "title": "Schedule change reply not supported",
  "status": 409,
  "code": "flights.schedule_change_not_supported",
  "detail": "The airline for this booking does not accept schedule-change replies through the API.",
  "suggestion": "Contact support to handle this schedule change.",
  "retryable": false,
  "requestId": "req_7f3a2c9e41d0b8a6c5e21f90"
}
```

See [Errors](https://quickota.com/developers/guides/errors) for how to handle errors in general.