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

# How to register your own Tiny ERP OAuth app

> Create a Tiny ERP app and connect its credentials to Nango

This guide shows you how to create an app in a Tiny ERP account to get OAuth credentials (client ID & secret). Tiny ERP apps are private: each Tiny ERP account creates its own app.

**1. Check the requirements**

Apps are available from the **Construa** plan, with the **Gestão de Aplicativos** extension installed in the Tiny ERP account. An account can have up to 5 apps.

**2. Create an app**

1. In Tiny ERP, open **Menu > Configurações > Geral > Aplicativos**.
2. Click **+ novo aplicativo** and enter a name for the app.
3. Under **URLs de Redirecionamento**, add `https://api.nango.dev/oauth/callback` (or your own [custom callback URL](https://nango.dev/docs/guides/auth/auth-guide.md#custom-oauth-callback-url-optional)).
4. Tick the permissions (modules) your integration needs, for example account information to call `GET /v3/info`.
5. Save, then open the app again and copy the **Client ID** and **Client Secret** under **Chaves de acesso**. Renew the client secret whenever you change the permissions.

**3. Add the credentials in Nango**

In your Tiny ERP integration in Nango, paste the client ID and secret. Nango requests the `openid` scope; the permissions come from the app.

**4. Next**

Follow the [*Quickstart*](https://nango.dev/docs/getting-started/quickstart.md).

> [!NOTE]
>
> Because every Tiny ERP account has its own app, you will usually let each user bring their own credentials. Create the Connect Session with empty `oauth_client_id_override` and `oauth_client_secret_override` values: Connect UI then shows Client ID and Client Secret as fields the user fills in. See [Create a connect session](https://nango.dev/docs/reference/backend/backend-sdk/node.md#create-a-connect-session) for the exact syntax.

For more details, see [Tiny ERP authentication](https://api-docs.erp.olist.com/documentacao/comecando/autenticacao) and [creating an app](https://api-docs.erp.olist.com/documentacao/comecando/criando-um-aplicativo).

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