# Encode an Access Method

* [Request Parameters](#request-parameters)
* [Response](#response)

Encodes an existing access method onto a plastic card placed on the specified [encoder](https://docs.seam.co/latest/capability-guides/access-systems/working-with-card-encoders-and-scanners).

<details>

<summary>Authentication Methods</summary>

* API key
* Personal access token\
  Must also include the `seam-workspace` header in the request.

To learn more, see [Authentication](https://docs.seam.co/latest/api/authentication).

</details>

## Request Parameters

**`access_method_id`** *String* (Required)

ID of the `access_method` to encode onto a card.

***

**`acs_encoder_id`** *String* (Required)

ID of the `acs_encoder` to use to encode the `access_method`.

***

## Response

{% hint style="success" %}
Returns: [**action\_attempt**](/latest/api/access_methods.md)
{% endhint %}

{% tabs %}
{% tab title="JSON" %}

```json
{
  "action_attempt_id": "1b4e28ba-2fa1-11d2-883f-0016d3cca427",
  "action_type": "ENCODE_CREDENTIAL",
  "error": null,
  "result": {
    "access_method": "card",
    "acs_credential_id": "73a0a199-024f-454d-a916-9bbda8502c12",
    "acs_system_id": "b1d03165-2759-474b-a342-e02223f27b39",
    "acs_user_id": "0fc82df4-391b-4d00-a234-86378f1c3952",
    "card_number": "164d29dc4a09b65f",
    "created_at": "2025-06-16T16:54:17.946514Z",
    "display_name": "Guest Lock 1, Vingcard Lock 2",
    "ends_at": "2025-07-12T16:54:17.946512Z",
    "errors": [],
    "external_type": "visionline_card",
    "external_type_display_name": "Visionline Card",
    "is_issued": true,
    "is_latest_desired_state_synced_with_provider": true,
    "is_managed": true,
    "is_multi_phone_sync_credential": false,
    "issued_at": "2025-06-16T16:54:17.946512Z",
    "latest_desired_state_synced_with_provider_at": "2025-06-18T16:54:17.946514Z",
    "starts_at": "2025-07-10T16:54:17.946512Z",
    "visionline_metadata": {
      "card_function_type": "guest",
      "card_id": "5",
      "common_acs_entrance_ids": ["5f4e3d2c-1b0a-9f8e-7d6c-5b4a3c2d1e0f"],
      "credential_id": "15",
      "guest_acs_entrance_ids": ["a1b2c3d4-e5f6-4a3b-2c1d-0e9f8a7b6c5d"],
      "is_valid": true
    },
    "warnings": [],
    "workspace_id": "005f1e54-5360-40db-8c31-4ef6baaad1fd"
  },
  "status": "success"
}
```

{% endtab %}
{% endtabs %}


---

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