> For the complete documentation index, see [llms.txt](https://docs.uaepass.ae/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.uaepass.ae/feature-guides/signature-integration-guide/hash-signing/hash-signing-single-document/hash-signing-java-sdk-set-up/hash-signing-process/1.-start-the-process.md).

# 1. Start the Process

Once the first Java command is running, entity has to make a call to below API to start the signature process: 

## API for Signature

<mark style="color:blue;">`GET`</mark> `http://localhost:8089/v2/signature/start`

{% tabs %}
{% tab title="200" %}

```json

{
 https://stg-id.uaepass.ae/trustedx-authserver/oauth/main-as?response_type=code&client_id={client_id}&redirect_uri=http://localhost:8689/uaepass/sign-identity&scope=urn:safelayer:eidas:sign:identity:profile&acr_values=urn:digitalid:authentication:flow:mobile&ui_locales=en&register_group_labelsM=qualified
}
```

{% endtab %}

{% tab title="400" %}
{&#x20;

"error": "Invalid request"

&#x20;}
{% endtab %}
{% endtabs %}

![](/files/eVFXLFmImgeih4mmdCU6)