WhatsApp error 130472 (user's number is part of an experiment): what it means and what to do

WhatsApp error 130472 means the person you sent a marketing template to is part of an experiment WhatsApp is running. Meta's error reference titles it "Message was not sent as part of an experiment" and points to its Marketing Message Experiment documentation. The message was not sent, you were not billed for it, and nothing is wrong with your template, number or account.

What the marketing message experiment is

Meta's experiments page says WhatsApp occasionally runs experiments to assess the impact of messaging on user experience and engagement. The one behind 130472 works like this:

• A very small percentage of WhatsApp users do not receive marketing template messages from any business.
• The exception is when either a customer service window or an open free entry point window exists between that user and the business.
• If you send a marketing template to someone in the experiment group, WhatsApp does not send it and does not bill you. A status webhook arrives with status: failed and code 130472.
• Resending gives the same error.
• The experiment has no fixed end date, and Meta says no exceptions or opt-outs are available, to protect the validity of the experiment.

Meta's page talks about marketing template messages. Utility and authentication templates are not mentioned as part of this experiment, so order updates and one-time passwords should still reach these users normally.

What it looks like

Because the decision is made at delivery time, the error comes back in the status webhook. Illustrative payload. Meta's current title is "Message was not sent as part of an experiment"; many searches and older references use "user's number is part of an experiment" instead. Key your handling on the code, not the wording:

{
  "statuses": [
    {
      "id": "wamid.HBgMOTE5OTg3NjU0MzIxFQIAERgSOUE...",
      "status": "failed",
      "timestamp": "1761830000",
      "recipient_id": "919987654321",
      "errors": [
        {
          "code": 130472,
          "title": "Message was not sent as part of an experiment",
          "message": "Message was not sent as part of an experiment",
          "error_data": {
            "details": "Message was not sent as part of an experiment."
          }
        }
      ]
    }
  ]
}

What to do

Meta's advice is direct: if you must deliver the marketing message, contact the user through some other, non-WhatsApp means and ask them to message you, so you can resend it within an open customer service window. Turned into practice:

1. Stop retrying marketing templates to that number. It will fail every time while the person is in the experiment.
2. Mark the contact. A tag such as wa-experiment lets you exclude them from future marketing broadcasts so they do not inflate your failure counts.
3. Invite them to start the conversation. Put a click-to-chat link (https://wa.me/91XXXXXXXXXX?text=Hi) in your SMS, email, invoice or website. When they message you, a 24-hour window opens.
4. Use Click-to-WhatsApp ads for reach. When a user messages you from a Click-to-WhatsApp ad and you reply within 24 hours, a free entry point window opens, which is one of the two conditions Meta names.
5. Send inside the window. Once the window is open, send the offer, either as a marketing template or as a normal reply.

How 130472 differs from other marketing failures

Several codes stop a marketing template reaching one person. They need different handling:

The key difference from 131049 is time: 131049 can clear after a day, while 130472 has no end date. The difference from 131026 is that the number itself is fine, and a customer in the experiment can still message you and receive your replies.

A worked example

Meera sends a Diwali preview template from Rangoli Home to 12,000 opted-in customers. A handful of recipients fail with 130472 (illustrative). She does not include them in the next day's retarget, because the same template would fail again. Instead, her team tags them and sends an SMS with a click-to-chat link reading "Reply on WhatsApp for early access to the Diwali collection". Customers who tap the link open a window, and the team sends the preview as a reply.

For a brand this is a small, steady slice of each campaign, not a problem to escalate to Meta. Reporting it separately keeps the rest of the delivery numbers honest.

Planning campaigns around it

• Expect a small, permanent 130472 share on marketing broadcasts, and leave it out of retry logic.
• Build conversations, not only broadcasts. Ads, QR codes and click-to-chat links that get customers to message first work for everyone, including people in the experiment.
• Keep transactional messages as utility. Do not move promotions into utility templates to get around it; Meta recategorises them and can restrict the account (see error 131064).

How Broadchat shows this

Broadchat explains the failure in plain English: "Meta is running an experiment and did not deliver this marketing message to this user." It appears under the failed message in the Inbox, with code 130472 in Message info, and failed recipients appear in the campaign report. When you retarget failed recipients, leave out 130472 contacts, or send them an invitation to message you through another channel instead. Contacts can be tagged in the CRM to keep them out of future marketing segments.

See the WhatsApp API error codes cheat-sheet for other codes, and our explainer on the 24-hour customer service window for how windows open. If you are new to the platform, start with what the WhatsApp Business API is.