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# API - September 15, 2026

## Added

### Hosted KYC/KYB: Parameter to preset the session language

The [POST Create an IDV Session](/api-reference/idv-sessions/create-idv-session) endpoint now accepts an optional `SessionLanguage` parameter to set the initial language of the hosted KYC/KYB session.

<table>
  <thead>
    <tr>
      <th class="header">`SessionLanguage` value</th>

      <th class="header">Language</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td class="table-content">`de-DE`</td>

      <td class="table-content">German</td>
    </tr>

    <tr>
      <td class="table-content">`en-US`</td>

      <td class="table-content">English</td>
    </tr>

    <tr>
      <td class="table-content">`es-ES`</td>

      <td class="table-content">Spanish</td>
    </tr>

    <tr>
      <td class="table-content">`fr-FR`</td>

      <td class="table-content">French</td>
    </tr>

    <tr>
      <td class="table-content">`it-IT`</td>

      <td class="table-content">Italian</td>
    </tr>

    <tr>
      <td class="table-content">`nl-NL`</td>

      <td class="table-content">Dutch</td>
    </tr>

    <tr>
      <td class="table-content">`pt-PT`</td>

      <td class="table-content">Portuguese</td>
    </tr>

    <tr>
      <td class="table-content">`zh-Hans-CN`</td>

      <td class="table-content">Chinese (Simplified)</td>
    </tr>
  </tbody>
</table>

\


If not specified using `SessionLanguage`, then the session takes the language of the user's browser (if one of those listed above), otherwise English.

Read more about language behavior in the [hosted KYC/KYB solution](/guides/users/verification/hosted#session-language) **→**