Meta API Error Codes Error 133015 400 Bad Request

WhatsApp Error 133015: Phone Number Deregistered — Re-Registration Guide

Error 133015 indicates that your business phone number was deregistered from Cloud API, often because someone attempted to verify the number on a mobile device.

Probable Causes

Someone registered the phone number on a physical WhatsApp consumer or business mobile app
An administrator initiated a phone number transfer or deregistration in Business Manager
Certificate or 2-step verification PIN conflict

Step-by-Step Resolution

Recommended Fix Protocol:

Immediately re-register the phone number via the Cloud API /register endpoint using your 6-digit PIN. Ensure physical SIM cards associated with WABA numbers are locked with carrier PINs to prevent rogue verification.

Technical Example / Code Payload:

curl -X POST \ 'https://graph.facebook.com/v20.0/YOUR_PHONE_NUMBER_ID/register' \ -H 'Authorization: Bearer YOUR_TOKEN' \ -H 'Content-Type: application/json' \ -d '{"messaging_product": "whatsapp", "pin": "YOUR_6_DIGIT_PIN"}'

Quick Answers

Frequently Asked Questions

Can a Cloud API number be used on the WhatsApp mobile app?+

No. Once a number is active on WhatsApp Business Cloud API, it cannot be simultaneously logged into a consumer or business mobile app.

Does deregistration delete customer message history?+

Chat history stored in your NY Digital CRM database remains completely intact during re-registration.

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