# Square

> Connect Square to sanda: what to prepare, the fields the connection form asks for, and how its data lands in your warehouse.

## Connect Square

:::steps
1. **Open the catalogue.** In the console, go to **Data · Connections** and press **New connection**.
2. **Choose Square.** It is listed under finance and payments; you can also search for it by name.
3. **Fill in the form.** Enter the fields below. Credentials go straight to sanda’s sync engine and are never stored in sanda’s database.
4. **Choose what to sync.** Pick the tables you want, and a sync mode for each. See [choose what to sync](https://docs.sanda-os.com.au/connections/choose-tables).
5. **Run the first sync.** sanda tests the connection, then lands each table you chose in your warehouse.
:::

## Configuration fields

What the connection form asks for. Required fields are marked; the rest are optional.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| **Authentication** | one of 2 options | No | Choose how to authenticate to Square. |
| **Sandbox** | boolean | Yes | Determines whether to use the sandbox or production environment. Default `false`. |
| **Start Date** | string | No | UTC date in the format YYYY-MM-DD. Any data before this date will not be replicated. If not set, all data will be replicated. Default `2021-01-01`. |
| **Include Deleted Objects** | boolean | No | In some streams there is an option to include deleted objects (Items, Categories, Discounts, Taxes). Default `false`. |

### Authentication

Choose how to authenticate to Square.

Choose one of the following. Each asks for its own fields.

**Oauth authentication**

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| **Client ID** | string, secret | Yes | The Square-issued ID of your application. |
| **Client Secret** | string, secret | Yes | The Square-issued application secret for your application. |
| **Refresh Token** | string, secret | Yes | A refresh token generated using the above client ID and secret. |

**API key**

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| **API key token** | string, secret | Yes | The API key for a Square application. |


## Related

:::links
- [Sync modes](https://docs.sanda-os.com.au/connections/sync-modes): How sanda reads each table on every run.
- [Sync schedules](https://docs.sanda-os.com.au/connections/schedules): How often a connection runs.
- [Allowlist sanda’s address](https://docs.sanda-os.com.au/connections/allowlist): For a system behind a firewall.
- [Troubleshoot connections](https://docs.sanda-os.com.au/connections/troubleshooting): What an error means and how to fix it.
:::