---
title: "POST /Invoices/{id}/apply-discount"
method: POST
path: "/Invoices/{id}/apply-discount"
tags: ["Invoices"]
---

# POST /Invoices/{id}/apply-discount

`POST /Invoices/{id}/apply-discount`

## Request

- Base URL: `https://api.clinicos.vet/backend/business`
- URL: `https://api.clinicos.vet/backend/business/Invoices/{id}/apply-discount`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/clinicos/apis/pawthosx-business-api-v1/docs/Invoices/:id/apply-discount/post.ts> (a function with typed inputs; its response is checked against the schema)

## Path parameters

- `id` string, required

## Request body

- ApplyDiscountDto
  - `discountCodeId` string
  - `lineItemId` string, nullable

## Response `200`

OK

- AppliedDiscountDto
  - `id` string
  - `invoiceId` string
  - `discountPolicyId` string
  - `invoiceLineItemId` string, nullable
  - `discountCode` string
  - `discountName` string
  - `discountType` string
  - `discountValue` union
    - number, double
    - string, double
  - `calculatedAmount` union
    - number, double
    - string, double
  - `appliedBy` UserSummaryDto
    - `id` string
    - `email` string
    - `firstName` string, nullable
    - `lastName` string, nullable
    - `displayName` string, nullable
    - `type` string
    - `roleId` string, nullable
    - `roleName` string, nullable
  - `appliedAt` string, date-time

---

[API](https://skmtc.dev/clinicos/apis/pawthosx-business-api-v1.md) - [All operations](https://skmtc.dev/clinicos/apis/pawthosx-business-api-v1/llms.txt) - [OpenAPI document](https://skmtc.dev/clinicos/apis/pawthosx-business-api-v1/revisions/099cf36186e0?raw)