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

# Connect Autodesk with OAuth 2.0 (Two-Legged) – StackOne Hub

> Link a Autodesk account in the StackOne Hub using OAuth 2.0 (Two-Legged). End-user guide to authorize the integration and start using Autodesk actions.

<Warning>You must have administrator access to the BIM 360 / ACC account so you can retrieve the Account ID and confirm the Data Region.</Warning>

<section data-guide-section data-guide-scopes="">
  <h2>Find your account ID</h2>

  <p>The account ID is the BIM 360 / ACC hub ID without the `b.` prefix. It is required for all 2-legged account-admin actions.</p>

  <ul>
    <li>Sign in to the <a href="https://admin.b360.autodesk.com" target="_blank" rel="noopener noreferrer">BIM 360 Account Admin</a> portal.</li>
    <li>The account ID appears in the URL after signing in.</li>
    <li>Format: `https://admin.b360.autodesk.com/accounts/{account_id}/...`</li>
    <li>Example: `c8b0c73d-3ae9-4b5f-a1c2-d33e44f55g66`</li>
    <li>Alternatively, if you already have a 3-legged connection, run the `list_hubs` action — each hub ID starts with `b.`; strip the prefix to get the account ID.</li>
  </ul>
</section>

<section data-guide-section data-guide-scopes="">
  <h2>Find your data region</h2>

  <p>Your data region identifies the Autodesk data center where your BIM 360 / ACC / Forma account is hosted. It is sent as the `Region` / `x-ads-region` header on region-aware endpoints.</p>

  <ul>
    <li>Sign in to your <a href="https://acc.autodesk.com" target="_blank" rel="noopener noreferrer">Autodesk Construction Cloud account</a>.</li>
    <li>Check your browser address bar — the domain identifies the region.</li>
    <li>United States: `acc.autodesk.com` → `US`</li>
    <li>Canada: `acc.can.autodesk.com` → `CAN`</li>
    <li>Europe: `acc.autodesk.eu` → `EMEA`</li>
    <li>United Kingdom: `acc.gbr.autodesk.com` → `GBR`</li>
    <li>Germany: `acc.deu.autodesk.com` → `DEU`</li>
    <li>India: `acc.ind.autodesk.com` → `IND`</li>
    <li>Japan: `acc.jpn.autodesk.com` → `JPN`</li>
    <li>Australia: `acc.aus.autodesk.com` → `AUS`</li>
    <li>See the <a href="https://aps.autodesk.com/en/docs/acc/v1/overview/acc-regions/" target="_blank" rel="noopener noreferrer">ACC regions reference</a> for the full list.</li>
  </ul>
</section>

<div data-whitelabel-hide>
  <h2>Linking the Account from the Hub</h2>

  <Steps>
    <Step title="Navigate to the Hub">
      Use one of the three <a href="/guides/accounts-section#linking-accounts">Linking Account Methods</a> to access the Hub.
    </Step>

    <Step title="Fill out the fields">
      Fill out the following fields using details from your provider:

      <ul>
        <li><strong>Account ID</strong></li>
        <li><strong>Data Region</strong></li>
      </ul>
    </Step>

    <Step title="Connect">
      <ul>
        <li>Click <strong>Connect</strong></li>
        <li>If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider's authorization flow.</li>
        <li>Once authorization is successful, you will see a confirmation popup</li>
      </ul>
    </Step>
  </Steps>

  <p>If the account linking is successful, you will see the newly linked account in your <a href="/guides/accounts-section">Accounts</a> page.</p>
</div>