---
title: "Amend a mandate"
method: PATCH
path: "/mandates/{mandateId}"
tags: ["Direct debit mandates"]
---

# Amend a mandate

`PATCH /mandates/{mandateId}`

Amend the specified [direct debit mandate](https://docs.adyen.com/business-accounts/accept-direct-debits-uk).

## Path parameters

- `mandateId` string, required

## Request body

- MandateUpdate
  - `paymentInstrumentId` string, nullable — The unique identifier of the payment instrument linked to the mandate.

## Response `202`

Accepted - The request has been accepted

## Other responses

- `401` — Unauthorized - authentication required.
- `403` — Forbidden - insufficient permissions to process the request.
- `404` — The mandate was not found
- `422` — Unprocessable Entity - a request validation error.
- `500` — Internal Server Error - the server could not process the request.

## Changes

- **2026-03-18** (v2) `75bd37373e46` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/adyen/apis/balanceplatformservice/changes/mandates/:mandateId/patch.md)

---

[API](https://skmtc.dev/adyen/apis/balanceplatformservice.md) · [All operations](https://skmtc.dev/adyen/apis/balanceplatformservice/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/adyen/balanceplatformservice/revisions/8761ac1a9aab/schema)