# unknown_address

> That address is not a passenger's or the booking contact's on this trip.

**Unknown address** · HTTP 422

## What it means

That address is not a passenger's or the booking contact's on this trip.

## What to do

Use an email from the trip's passengers or contact.

## Example

```json
{
  "type": "https://api.bymundi.com/problems/unknown_address",
  "title": "Unknown address",
  "status": 422,
  "detail": "That address is not a passenger's or the booking contact's on this trip.",
  "code": "unknown_address",
  "requestId": "req_…"
}
```

How to read any error: [Errors guide](https://api.bymundi.com/docs/guides/errors.md).