---
title: "Send a payment reminder"
method: POST
path: "/invoices/{invoice_id}/reminder"
tags: ["Invoicing"]
---

# Send a payment reminder

`POST /invoices/{invoice_id}/reminder`

Requests a payment reminder for an unpaid invoice. Accepted asynchronously. Pass `idempotency_key` to make retries safe. Requires a write-scoped key.

## Path parameters

- `invoice_id` string, required

## Request body

- object
  - `customer_id` string — Target company. Optional for API keys.
  - `note` string — Optional note to include with the reminder.
  - `idempotency_key` string — Client-chosen key to deduplicate retries.

## Response `202`

Reminder request accepted.

- EventAccepted — Acknowledgement of an asynchronously dispatched request.
  - `event_id` string — Identifier of the dispatched event.

## Other responses

- `401` — Missing or invalid bearer token.
- `403` — Insufficient scope or role — e.g. a read-scoped key on a mutating method, or an API key on an admin/approver-only endpoint.

---

[API](https://skmtc.net/lastaccountingcompany/apis/lac-customer-api.md) · [All operations](https://skmtc.net/lastaccountingcompany/apis/lac-customer-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/lastaccountingcompany/lac-customer-api/revisions/52e277b4f031/schema)