> For the complete documentation index, see [llms.txt](https://docs.pagopa.it/centrostella-1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pagopa.it/centrostella-1/centro-stella/instructions-for-agenzia-delle-entrate-mandate/how-to-join/02.-integrate-pagopa-environments.md).

# 02. Integrate PagoPA Environments

1. Open **routes** to **PagoPA endpoints**.
2. Request the signature of the **certificates** for the **PRODUCTION** and **UAT** environments.
3. Obtain a **subscription key** for **API** access.
4. **Wait** for the confirmation emails
5. **Check** if you are enabled for PagoPA UAT environment.

{% hint style="info" %}
If the agreement has not yet been signed, go ahead **only** with UAT activities.
{% endhint %}