---
title: "Callback API for /subscriptions/hiu/notify to acknowledge receipt of notification."
method: POST
path: "/v0.5/subscriptions/hiu/on-notify"
tags: ["subscriptions", "hiu facing"]
---

# Callback API for /subscriptions/hiu/notify to acknowledge receipt of notification.

`POST /v0.5/subscriptions/hiu/on-notify`

This API is called by HIU as acknowledgement to consent notifications, specifically for cases when consent is REVOKED or EXPIRED.

## Headers

- `Authorization` string, required

## Request body

- HIUSubscriptionNotificationAcknowledgment
  - `acknowledgement` object
    - `eventId` string, required
    - `status` 'OK', required
  - `error` Error
    - `code` 1000 | 10001, required
    - `message` string, required
  - `requestId` string, uuid, required — a nonce, unique for each HTTP request
  - `resp` RequestReference, required
    - `requestId` string, uuid, required — the requestId that was passed
  - `timestamp` string, date-time, required — Date time format in UTC, includes miliseconds YYYY-MM-DDThh:mm:ss.vZ

## Response `202`

Request Accepted.

## Other responses

- `401` — **Causes:** * Invalid/Expired/Empty token.
- `500` — **Causes:** * Downstream services are down

---

[API](https://skmtc.net/ndhm/apis/ndhm-cm.md) · [All operations](https://skmtc.net/ndhm/apis/ndhm-cm/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ndhm/ndhm-cm/versions/ae271fcd89d7/schema)