> ## Documentation Index
> Fetch the complete documentation index at: https://docs.seam.co/llms.txt
> Use this file to discover all available pages before exploring further.

# The ACS System Object

> Learn how the acs_system object represents an access control system in which you create users and credentials to grant them access at entrances.

## The acs\_system Object

Represents an [access control system](https://docs.seam.co/low-level-apis/access-systems).

Within an `acs_system`, create [`acs_user`s](https://docs.seam.co/api/acs/users/object#acs_user) and [`acs_credential`s](https://docs.seam.co/api/acs/credentials/object#acs_credential) to grant access to the `acs_user`s.

For details about the resources associated with an access control system, see the [access control systems namespace](https://docs.seam.co/api/acs/object).

<ResponseExample>
  ```json ACS System theme={null}
  {
    "acs_access_group_count": 5,
    "acs_system_id": "dbed811f-a8c7-4dab-a3cb-1a734ebd6ac7",
    "acs_user_count": 20,
    "connected_account_id": "a94aeed0-1ae0-4e49-9c23-8444c7ceba09",
    "connected_account_ids": [
      "a94aeed0-1ae0-4e49-9c23-8444c7ceba09"
    ],
    "created_at": "2025-06-15T16:54:17.946425Z",
    "default_credential_manager_acs_system_id": "5dde2def-3507-44f5-9521-7ca96aa4cd18",
    "errors": [],
    "external_type": "salto_ks_site",
    "external_type_display_name": "Salto KS site",
    "image_alt_text": "Salto KS site Logo",
    "image_url": "https://connect.getseam.com/_next/image?url=https://connect.getseam.com/assets/images/acs_systems/salto_ks_site.png&q=75&w=128",
    "is_credential_manager": false,
    "location": {
      "time_zone": "America/New_York"
    },
    "name": "My ACS System",
    "warnings": [],
    "workspace_id": "172920be-1f4d-45d4-8519-ecc3bdee638f"
  }
  ```
</ResponseExample>

***

## Properties

<ResponseField name="acs_access_group_count" type="number">
  The acs access group count.
</ResponseField>

<ResponseField name="acs_system_id" type="String (UUID)">
  ID of the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="acs_user_count" type="number">
  The acs user count.
</ResponseField>

<ResponseField name="connected_account_id" type="String (UUID)">
  ID of the [connected account](https://docs.seam.co/core-concepts/connected-accounts) associated with the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="connected_account_ids" type="Array" deprecated>
  IDs of the [connected accounts](https://docs.seam.co/core-concepts/connected-accounts) associated with the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="created_at" type="String (ISO 8601)">
  Date and time at which the [access control system](https://docs.seam.co/low-level-apis/access-systems) was created.
</ResponseField>

<ResponseField name="default_credential_manager_acs_system_id" type="String (UUID)">
  ID of the default credential manager `acs_system` for this [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="errors" type="Array">
  Errors associated with the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="external_type" type="Enum (String)">
  Brand-specific terminology for the [access control system](https://docs.seam.co/low-level-apis/access-systems) type.
</ResponseField>

<ResponseField name="external_type_display_name" type="String">
  Display name that corresponds to the brand-specific terminology for the [access control system](https://docs.seam.co/low-level-apis/access-systems) type.
</ResponseField>

<ResponseField name="image_alt_text" type="String">
  Alternative text for the [access control system](https://docs.seam.co/low-level-apis/access-systems) image.
</ResponseField>

<ResponseField name="image_url" type="String">
  URL for the image that represents the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="is_credential_manager" type="Boolean">
  Indicates whether the `acs_system` is a credential manager.
</ResponseField>

<ResponseField name="location" type="Object">
  The location.

  <Expandable title="properties">
    <ResponseField name="time_zone" type="String">
      Time zone in which the [access control system](https://docs.seam.co/low-level-apis/access-systems) is located.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="name" type="String">
  Name of the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="system_type" type="Enum (String)" deprecated>
  The system type.
</ResponseField>

<ResponseField name="system_type_display_name" type="String" deprecated>
  The system type display name.
</ResponseField>

<ResponseField name="visionline_metadata" type="Object">
  The visionline metadata.

  <Expandable title="properties">
    <ResponseField name="lan_address" type="String">
      IP address or hostname of the main Visionline server relative to [Seam Bridge](https://docs.seam.co/capability-guides/seam-bridge) on the local network.
    </ResponseField>

    <ResponseField name="mobile_access_uuid" type="String">
      Keyset loaded into a reader. Mobile keys and reader administration tools securely authenticate only with readers programmed with a matching keyset.
    </ResponseField>

    <ResponseField name="system_id" type="String">
      Unique ID assigned by the ASSA ABLOY licensing team that identifies each hotel in your credential manager.
    </ResponseField>
  </Expandable>
</ResponseField>

<ResponseField name="warnings" type="Array">
  Warnings associated with the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>

<ResponseField name="workspace_id" type="String (UUID)">
  ID of the [workspace](https://docs.seam.co/core-concepts/workspaces) that contains the [access control system](https://docs.seam.co/low-level-apis/access-systems).
</ResponseField>