# HS License

Open a sales order and find your HS serial.

<p class="callout info">The HS for serial should generally already be generated. Only serials with defined **"TDS License Key"** will have the license generated.</p>

Before sending the invoicing email, check the **"Add HS activation codes PDF attachment to email".** This will append the HS license certificate to the email before it's sent.

[![image.png](https://how-to-erp.dewesoft.com/uploads/images/gallery/2026-04/scaled-1680-/NYeimage.png)](https://how-to-erp.dewesoft.com/uploads/images/gallery/2026-04/NYeimage.png)

Once the order has been sent and the HS license certificate has been generated, the license key can be viewed on the **Dewesoft Account** site, on sales order's **details page.**

[![image.png](https://how-to-erp.dewesoft.com/uploads/images/gallery/2026-04/scaled-1680-/A6wimage.png)](https://how-to-erp.dewesoft.com/uploads/images/gallery/2026-04/A6wimage.png)

It can be found next to its corresponding serial number in the **"Serials"** section.