`https://monitor.agilepixel.io/docs/api/problems/validation-failed`

The request body or query is invalid. The status is `422`. `errors` lists every invalid field, in dot notation for nested fields such as `config.webhook_url`, with its messages. `detail` is the first message, with a count of any others.

```http
HTTP/1.1 422 Unprocessable Content
Content-Type: application/problem+json

{
  "type": "https://monitor.agilepixel.io/docs/api/problems/validation-failed",
  "title": "Validation failed",
  "status": 422,
  "detail": "The url field is required unless type is in heartbeat.",
  "errors": {
    "url": ["The url field is required unless type is in heartbeat."]
  }
}
```

## What to do
Fix each field in `errors` and send the request again; retrying it unchanged fails the same way. The messages are written for people: show them next to the field, or log them. Common causes:

| Field | Usually means |
|---|---|
| `url` | It is missing, or not a full URL. `tcp` and `icmp` monitors still need a URL such as `https://db.example.com`; only its host is used |
| `check_interval_minutes` | It isn't 1, 5, 15, 30 or 60, or it is below the plan's minimum. Read `min_interval_minutes` from [the team](https://monitor.agilepixel.io/docs/api/team) |
| `check_interval_seconds` | It is below the plan's `min_interval_seconds` |
| `config.*` | The contact's config is missing a key its type needs. See [config for each type](https://monitor.agilepixel.io/docs/api/notification-contacts#contact-config) |
| `notification_contact_ids.0` | The ID isn't one of the team's contacts |
| `per_page` | It isn't between 1 and 100 |