---
title: "Simulate that the Next Credential Scan Will Succeed"
method: POST
path: "/acs/encoders/simulate/next_credential_scan_will_succeed"
tags: ["/acs"]
---

# Simulate that the Next Credential Scan Will Succeed

`POST /acs/encoders/simulate/next_credential_scan_will_succeed`

Simulates that the next attempt to scan a [credential](/low-level-apis/access-systems/managing-credentials) using the specified [encoder](/low-level-apis/access-systems/working-with-card-encoders-and-scanners) will succeed. You can only perform this action within a [sandbox workspace](/core-concepts/workspaces#sandbox-workspaces).

## Request body

- union
  - object
    - `acs_credential_id_on_seam` string, uuid — ID of the Seam `acs_credential` that matches the `acs_credential` on the encoder in this simulation.
    - `acs_encoder_id` string, uuid, required — ID of the `acs_encoder` that will be used in the next request to scan the `acs_credential`.
    - `scenario` 'credential_exists_on_seam' | 'credential_on_encoder_needs_update' — Scenario to simulate.
  - object
    - `acs_encoder_id` string, uuid, required — ID of the `acs_encoder` that will be used in the next request to scan the `acs_credential`.
    - `scenario` 'credential_does_not_exist_on_seam', required — Scenario to simulate.
  - object
    - `acs_encoder_id` string, uuid, required — ID of the `acs_encoder` that will be used in the next request to scan the `acs_credential`.
    - `scenario` 'credential_on_encoder_is_empty', required — Scenario to simulate.

## Response `200`

OK

- object

## Other responses

- `400` — Bad Request
- `401` — Unauthorized

---

[API](https://skmtc.net/seam/apis/seam-connect.md) · [All operations](https://skmtc.net/seam/apis/seam-connect/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/seam/seam-connect/revisions/00c35395ce12/schema)