> ## Documentation Index
> Fetch the complete documentation index at: https://docs.valued.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Invoice Item

> An invoice line item

Each invoice item represents a component line of an invoice. Each of these items, represent something you charge the customer for.

## The invoice item model

Invoice items support charging for a one-off charge or proration adjustments due to plan upgrades or downgrades.

### Properties

| Name                   | Type      | Required | Description                                                                                         |
| ---------------------- | --------- | -------- | --------------------------------------------------------------------------------------------------- |
| `id`                   | `string`  | Yes      | Unique identifier                                                                                   |
| `quantity`             | `string`  | Yes      | Item's quantity                                                                                     |
| `amount`               | `integer` | Yes      | An amount that was paid                                                                             |
| `period_start`         | `integer` | No       | A start of a subscription period                                                                    |
| `period_end`           | `integer` | No       | An end of a subscription period                                                                     |
| `proration`            | `boolean` | No       | Whether the invoice item is an automatic proration adjustment from when the customer switched plans |
| `description`          | `string`  | No       | Item's description                                                                                  |
| `amount_excluding_tax` | `integer` | No       | An amount without the tax                                                                           |