---
title: "Changes to Sandbox: Create an initial Card Authentication Challenge"
method: POST
path: "/simulations/card_authentications/{card_payment_id}/challenges"
---

# Changes to Sandbox: Create an initial Card Authentication Challenge

`POST /simulations/card_authentications/{card_payment_id}/challenges`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 17 revisions.

- **2026-08-01** `c6310603949a` — 1 info

## Changes

- **2026-08-01** `c6310603949a` — 1 info
  - added the required property `elements/items/card_authorization/anyOf[subschema #1: Card Authorization]/original_card_payment_id` to the response with the `200` status

---

[Operation](https://skmtc.dev/increase/apis/increase-api-2/docs/simulations/card_authentications/:card_payment_id/challenges/post.md) · [API](https://skmtc.dev/increase/apis/increase-api-2.md) · [Page](https://skmtc.dev/increase/apis/increase-api-2/changes/simulations/card_authentications/:card_payment_id/challenges/post)