---
displayed_sidebar: servicesSidebar
---

import ParameterTypes from "@site/src/components/ParameterTypes"

# LineItemAdjustment

A Line Item Adjustment includes details on discounts applied on a line item.

## constructor

`**new LineItemAdjustment**()`

A Line Item Adjustment includes details on discounts applied on a line item.

___

## Properties

<ParameterTypes parameters={[
  {
    "name": "amount",
    "type": "`number`",
    "description": "The adjustment amount",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "description",
    "type": "`string`",
    "description": "The line item's adjustment description",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "discount",
    "type": "[Discount](Discount.mdx)",
    "description": "The details of the discount associated with the adjustment.",
    "optional": false,
    "defaultValue": "",
    "expandable": true,
    "children": []
  },
  {
    "name": "discount_id",
    "type": "`string`",
    "description": "The ID of the discount associated with the adjustment",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "id",
    "type": "`string`",
    "description": "The Line Item Adjustment's ID",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "item",
    "type": "[LineItem](LineItem.mdx)",
    "description": "The details of the line item.",
    "optional": false,
    "defaultValue": "",
    "expandable": true,
    "children": []
  },
  {
    "name": "item_id",
    "type": "`string`",
    "description": "The ID of the line item",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  },
  {
    "name": "metadata",
    "type": "`Record<string, unknown>`",
    "description": "An optional key-value map with additional details",
    "optional": false,
    "defaultValue": "",
    "expandable": false,
    "children": []
  }
]} />

___

## Methods

### beforeInsert

`Private **beforeInsert**(): void`

#### Returns

`void`

<ParameterTypes parameters={[
  {
    "name": "void",
    "type": "`void`",
    "optional": true,
    "defaultValue": "",
    "description": "",
    "expandable": false,
    "children": []
  }
]} />