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

# Set Envelope Legality Level

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  <img className="block" src="https://mintcdn.com/alohi/KnYKDC0EFTC2S5WS/resources/guides/set-envelope-legality-level.svg?fit=max&auto=format&n=KnYKDC0EFTC2S5WS&q=85&s=3eebf9763f5638d0caab7fe6e32b927b" alt="Set envelope legality level" width="733" height="314" data-path="resources/guides/set-envelope-legality-level.svg" />
</Frame>

The **Legality Level** of an envelope determines the level of security and compliance required for the document signing process.

The Sign.Plus platform supports three legality levels:

| Level       | Description                             |
| ----------- | --------------------------------------- |
| SES         | Simple Electronic Signature             |
| QES\_EIDAS  | Qualified Electronic Signature (eIDAS)  |
| QES\_ZERTES | Qualified Electronic Signature (ZertES) |

```bash Set envelope legality level theme={null}
curl --request PUT \
--url https://restapi.sign.plus/v2/envelope/{envelope_id}/set_legality_level \
--header 'Authorization: Bearer <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"legality_level": "SES"
}'
```

<Card horizontal title="API Reference" icon="code" href="/api-reference/endpoints/signplus/set-envelope-legality-level">
  Get endpoint details
</Card>