> For the complete documentation index, see [llms.txt](https://developer.paddle.com/llms.txt).

# Unknown field

A dimension, measure, or filter field in your query isn't available for this metric.

---

## Example

```json
{
  "error": {
    "type": "request_error",
    "code": "unknown_field",
    "detail": "The field 'country' is not available for entity 'transactions.completed'.",
    "documentation_url": "https://developer.paddle.com/errors/metrics/unknown_field"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}
```

## Details

| Attribute | Value |
| --- | --- |
| Status code | 400 |
| Error code | `unknown_field` |
| Error message | The field '%s' is not available for entity '%s'. |

## Common causes

- A field in `dimensions`, `measures`, or `filters` isn't defined for the entity you're querying.
- There's a typo in a field name.

## Common solutions

- Check the dimensions and measures returned by [list Explore metric entities](https://developer.paddle.com/api-reference/metrics/list-explore-metric-entities) for this metric, and use one of those names.
- Confirm the spelling of every field in `dimensions`, `measures`, and `filters`.