---
title: "Reset card ATC"
method: POST
path: "/wallet/v2/cards/{cardId}/atc/reset"
tags: ["Cards"]
---

# Reset card ATC

`POST /wallet/v2/cards/{cardId}/atc/reset`

Reset card ATC (Application Transaction Counter) in case of sync failure between what is saved in a card's memory and the incremented data. The ATC is a counter, maintained by the chip card application (incremented by the chip), that provides a sequential reference to each transaction. A duplicate ATC, a decrease in ATC, or a large jump in ATC values  may indicate data copying or other fraud. For more information on how Pismo processes ATCs, refer to the [Application Transaction Counter (ATC)](https://developers.pismo.io/pismo-docs/docs/application-transaction-counter-atc) guide article.

**Notes:** 
  * ATC reset only occurs on the Pismo platform. When a new transaction occurs, the ATC is synchronized with the chip's ATC.
  * This endpoint takes an account token - an access token encoded with a Pismo account ID. For combo cards, whether the debit or credit ATC is reset depends on which account ID (credit or debit) is encoded with the access token.

## Path parameters

- `cardId` string, required

## Response `200`

Card ATC reset

- CardsSuccessResponse — Response body
  - `success` boolean — Flag indicating success

## Other responses

- `403` — The request has been lost
- `500` — Internal server error

---

[API](https://skmtc.net/pismo/apis/platform-authentication.md) · [All operations](https://skmtc.net/pismo/apis/platform-authentication/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/pismo/platform-authentication/versions/935b62e16de4/schema)