# The Rate Card Custom Unit Overage Rate object

### The Rate Card Custom Unit Overage Rate object

```json
{}
```

## Attributes

- `id` (string)
  Unique identifier for the object.

- `object` (string, value is "v2.billing.rate_card_custom_unit_overage_rate")
  String representing the object’s type. Objects of the same type share the same value of the object field.

- `created` (timestamp)
  Timestamp of when the object was created.

- `custom_pricing_unit` (string)
  The ID of the custom pricing unit this overage rate applies to.

- `livemode` (boolean)
  Has the value `true` if the object exists in live mode or the value `false` if the object exists in test mode.

- `metadata` (map, nullable)
  Set of [key-value pairs](https://docs.stripe.com/api/metadata.md) that you can attach to an object. This can be useful for storing additional information about the object in a structured format.

- [`one_time_item`](https://docs.stripe.com/api/v2/billing/rate-card-custom-unit-overage-rates/object.md?query=one_time_item) (object)
  A one-time item represents a product that can be charged as a one-time line item, used for overage charges when custom pricing unit credits are exhausted.

- `rate_card` (string)
  The ID of the Rate Card this overage rate belongs to.

- `rate_card_version` (string)
  The ID of the Rate Card Version this overage rate was created on.

- `unit_amount` (string)
  The per-unit amount to charge for overages, represented as a decimal string in minor currency units with at most 12 decimal places.