63051: WhatsApp Sender or Account is Locked

This error appears when Meta restricts either a WhatsApp sender or its associated WhatsApp Business Account (WABA). Meta can apply a restriction for policy violations, security issues, or inactivity. While a sender or WABA is restricted, all messaging traffic and sender-management actions (such as updates or new registrations) are blocked.

• 30-day inactivity (most common): Meta locks a sender if it detects no traffic during a rolling 30-day period.
• Policy or account violations: The sender or WABA violates one or more of the following:
  • WhatsApp Business Terms of Service
  • WhatsApp Business Messaging Policy
  • Meta Commerce Policy
• Verification mismatch: Meta cannot verify the request data (for example, an incorrect two-step verification PIN).

• Inactivity lock

  • Re-register the sender in the Twilio Console through Self Sign-up or by using the Senders API.
  • Prevent future locks by sending at least one message every 30 days. If possible, wait to register the sender until you are ready to send traffic.

• Policy or account violation

  1. Attempt to re-register the sender.
  2. If re-registration fails and you believe the restriction is in error, contact Twilio Support. Twilio Support can appeal the restriction to Meta on your behalf.

• Verification mismatch

  1. Confirm that the two-step verification PIN and any other requested data match the values configured in WhatsApp Manager.
  2. After correcting the data, re-register the sender.