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CRITICAL: WhatsApp /sendContent API broken - Service Interruption

  • February 9, 2026
  • 2 replies
  • 30 views
A

Hi Team,

Our WhatsApp AI integration has been running for months without issue. As of today, ALL!! calls to the /sendContent API are failing for users within the 24-hour window.

This is a business-critical issue for us. We have not changed our code or payload structure.

The error we receive is: ”Message tags are no longer supported for Facebook Messenger.”.

Please confirm if this is a known issue or an unannounced update to the API requirements for WhatsApp.

Regards,
Alexander

Best answer by DavidDisruptiva

Hello. If the JSON you're using looks like this

{
  "subscriber_id": X,
  "data": {
    "version": "v2",
    "content": {
      "type": "whatsapp",
      "messages": [
        {
          "type": "text",
          "text": "X"
        }
      ]
    }
  },
  "message_tag": "ACCOUNT_UPDATE"
}

Delete 

,
  "message_tag": "ACCOUNT_UPDATE"

The final JSON must be:

{
  "subscriber_id": X,
  "data": {
    "version": "v2",
    "content": {
      "type": "whatsapp",
      "messages": [
        {
          "type": "text",
          "text": "X"
        }
      ]
    }
  }
}

2 replies

DavidDisruptiva

Hello. If the JSON you're using looks like this

{
  "subscriber_id": X,
  "data": {
    "version": "v2",
    "content": {
      "type": "whatsapp",
      "messages": [
        {
          "type": "text",
          "text": "X"
        }
      ]
    }
  },
  "message_tag": "ACCOUNT_UPDATE"
}

Delete 

,
  "message_tag": "ACCOUNT_UPDATE"

The final JSON must be:

{
  "subscriber_id": X,
  "data": {
    "version": "v2",
    "content": {
      "type": "whatsapp",
      "messages": [
        {
          "type": "text",
          "text": "X"
        }
      ]
    }
  }
}

    A
    • alexander38
    • Author
    • Up-and-Comer
    • February 9, 2026

    Thank you ​@DavidDisruptiva, that worked!

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