---
title: "Reverse the card authorisation"
method: POST
path: "/authorisations/{authId}/reverse"
tags: ["Card Simulator"]
---

# Reverse the card authorisation

`POST /authorisations/{authId}/reverse`

Simulate a reversal of an authorization for a card

## Path parameters

- `authId` string, required

## Request body

- CardsimulatorReverseAuthorizationRequest — Partial reversal amount. Omit body for full reversal
  - `reversalAmount` number — Amount to reverse. If absent or equal to the open amount, a full reversal is performed. Must not exceed the open amount.

## Response `204`

No Content

## Other responses

- `400` — Validation errors

---

[API](https://skmtc.net/modulrfinance/apis/modulr-api.md) · [All operations](https://skmtc.net/modulrfinance/apis/modulr-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/modulrfinance/modulr-api/versions/cbd52524c8ef/schema)