# `flights.passenger_data_invalid` — Passenger data not accepted

**HTTP status:** 422  
**Retryable:** no — change the request or the flow first

## When it happens

A passenger is invalid: no adult on the booking, a child or infant without birth date, a passenger type that does not match the age, a missing or expired passport on an international trip (a national ID is accepted on domestic trips only), or a placeholder name such as TEST. Names must be in Latin letters exactly as on the travel document.

## What to do

Correct the passenger listed in `detail` and hold again with a new `Idempotency-Key`.

## Example response

```json
{
  "type": "https://quickota.com/developers/errors/flights.passenger_data_invalid",
  "title": "Passenger data not accepted",
  "status": 422,
  "code": "flights.passenger_data_invalid",
  "detail": "A passenger is invalid: no adult on the booking, a child or infant without birth date, a passenger type that does not match the age, a missing or expired passport on an international trip (a national ID is accepted on domestic trips only), or a placeholder name such as TEST. Names must be in Latin letters exactly as on the travel document.",
  "suggestion": "Correct the passenger listed in \u0060detail\u0060 and hold again with a new \u0060Idempotency-Key\u0060.",
  "retryable": false,
  "requestId": "req_7f3a2c9e41d0b8a6c5e21f90"
}
```

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