---
title: "Activate (send) an invoice"
method: PUT
path: "/invoices/{id}:activate"
tags: ["Invoices"]
---

# Activate (send) an invoice

`PUT /invoices/{id}:activate`

## Path parameters

- `id` string, required — The id of the invoice

## Request body

- ActivateInvoiceRequest — Activate an invoice. Sends it to collection via One time payment or Direct Debit
  - `collectionMethod` 'ONE_TIME_PAYMENT' | 'DIRECT_DEBIT_PAYMENT' | 'NONE' — How the payment is expected to be collected for this invoice.
  - `customMessage` string — An optional message that will be sent to the customer when the invoice is activated.
  - `templateId` string — The schedule template id used for sending the invoice to customer.

## Response `200`

The invoice was activated

## Other responses

- `400` — The invoice can not be activated
- `404` — The invoice does not exist

---

[API](https://skmtc.dev/adfin/apis/adfin-api.md) · [All operations](https://skmtc.dev/adfin/apis/adfin-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/adfin/adfin-api/revisions/53d29f0850e0/schema)