Verify Your Facebook Domain Now to Avoid Data Loss on iOS 26

Did you know that with just one small step, you can retain all your Facebook ad data, even when iPhone users opt out of tracking? That step is domain verification. It sounds technical, but it's actually much simpler than you think.

Ever since Apple launched iOS 26 with its AppTrackingTransparency policy, the entire digital advertising industry has been turned upside down. Facebook Pixel can no longer record conversions from iOS users as before. However, Facebook has introduced an alternative solution: Aggregated Event Measurement (AEM). And to use AEM, you are required to verify your domain on Facebook Business Manager.

Why is Domain Verification So Important?

Imagine you're running a Facebook ad campaign for an online fashion shop. Before iOS 26, Pixel could track every step: who viewed a product, who added it to their cart, who made a purchase. After iOS 26, if a user chooses “Ask App Not to Track,” Facebook is almost blind. But with AEM, data is still collected in an aggregated form, not tied to individuals, and you can still see which campaigns are effective. However, AEM only works if your domain has been verified.

Without verification, you will lose the ability to measure conversions from iOS users – a significant portion of your potential customer base. For those running e-commerce ads, this could be a fatal blow.

Who Should Verify Their Domain?

Many business owners often delegate this task to agencies. However, Facebook itself recommends that you do it yourself. Why? Because when you verify it yourself, you have full control over your domain. If an agency does it for you, you might encounter problems later when switching partners because the domain is already "linked" to their Business Manager account. Doing it yourself is both transparent and secure.

Step-by-Step Guide to Domain Verification

Step 1: Access Facebook Business Manager

First, go to business.facebook.com. In the left-hand menu, select Business Settings. Scroll down to the Brand Safety section, and click on Domains.

Step 2: Add Your Domain

Enter your root domain, for example, yourdomain.com, into the search bar. When your domain appears, click the green Add button. Facebook will ask you to verify by adding a TXT record to your domain's DNS.

Step 3: Add the TXT Record at Your Domain Provider

Log in to where you manage your domain (GoDaddy, Bluehost, Cloudflare, etc.). Navigate to the DNS Records section. Create a new record with:

• Type: TXT
• Name: @ (if prompted)
• Value: Paste the TXT code provided by Facebook

Then, save it.

Step 4: Verify on Facebook

Return to the domain verification page in Facebook Business Manager and click Verify. This process may take up to 72 hours for DNS propagation. Once successful, you will see a green checkmark and the message “Domain verified.”

What Do You Gain After Verification?

Now, you can create aggregated web events for your domain. This allows Facebook to measure conversions from iOS users even if they don't allow tracking. Without verification, you won't be able to create these events, meaning you'll completely lose data from iPhones.

Additionally, domain verification helps you control who can run ads with your domain, preventing impersonation or brand misuse.

Important Notes

• Use the root domain (without www), as Facebook automatically handles variations.
• If you use multiple subdomains, each subdomain needs to be verified separately.
• The TXT record may take a few hours to 72 hours to become effective. Don't worry if you don't see it immediately.

Some people encounter errors when adding TXT records due to typos. Please copy the code from Facebook exactly, avoiding manual typing.

A Real-Life Story

I once saw a fairly large fashion shop where, after iOS 26, the reported conversion rate on Facebook dropped by more than half. They panicked and tried everything. In the end, the reason was simply that they hadn't verified their domain. After they did, the data stabilized. Such a small step had a huge impact.

Therefore, if you haven't verified your domain yet, do it today. Don't wait until your campaigns are running and you can't measure anything to start scrambling.

And you, have you verified your domain for your Facebook Business Manager? Did you encounter any difficulties at any step? Please share in the comments below so everyone can help each other!