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Adding a New Ad Account to Looker Studio

How to make a new Facebook ad account appear in the STM connectors so it can be used in Looker Studio reports.

Before you start
Make sure these are in place before following the steps below.
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Admin access to Meta Business Suite

You need admin access to the STM Agency business portfolio in Meta Business Settings to assign assets to the system user.

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Ad account added to STM Agency

The ad account must already be visible under the STM Agency business portfolio. If it's not, add it first via Business Settings → Ad Accounts → + Add.

Steps
This takes about 2 minutes. No code changes or token regeneration needed.

  1. Open Meta Business Settings

    Go to business.facebook.com/settings and make sure you're in the STM Agency business portfolio.

  2. Navigate to System Users

    In the left sidebar, go to Users → System users and click on Conversions API System User.

    System Users page showing Conversions API System User selected
    Click on "Conversions API System User" in the System users list.

  3. Assign the new ad account

    Click the three-dot menu (…) next to the system user and select "Assign assets".

    Three-dot menu showing Assign assets option
    Click the three-dot menu, then "Assign assets".

  4. Select the ad account and set permissions

    In the modal:

    • Select Ad accounts from the left panel
    • Search for the ad account by name or ID and tick it
    • On the right, toggle on "View performance" under Partial access

    Assign assets modal showing ad account selected with View performance toggled on
    Select "Ad accounts" on the left, tick the account, and enable "View performance" on the right.

  5. Click "Assign assets" and verify in Looker

    Click the blue "Assign assets" button. Go to Looker Studio and add a new Reach data source — the new ad account will appear in the Ad Account dropdown immediately.

Which connectors does this apply to?
This only applies to the Reach connectors, which use the system user token.
  • Facebook Ads — Reach — deduplicated Facebook reach for blending
  • LinkedIn Ads — Reach — deduplicated LinkedIn reach & dwell time
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Other data sources (Ad Performance, Creative Performance, etc.) are not affected. Those are powered by the data pipeline, which auto-discovers new accounts — no manual setup needed.
Important notes
Things to keep in mind.
✅
No token changes needed. The system user token never expires and automatically picks up any new ad accounts assigned to it. You do not need to generate a new token or update any code.
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Only use "View performance". Do not grant full access or "Manage campaigns" unless there is a specific reason. The connectors only read data — they never create or modify ads.
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Ad account must be active. If the account status is disabled, unsettled, or in review, it won't appear in the connector dropdown even after assigning it. Check the account status in Business Settings → Ad Accounts if it doesn't show up.

Quick reference

Where: Meta Business Settings → System Users → Conversions API System User → Assign assets
What: Ad accounts → select the account → toggle "View performance"
Result: Account appears in all STM Looker Studio connector dropdowns immediately