# Troubleshooting WhatsApp API Error 133010: Phone Number Not Registered
Author: Prashant Jangid
Author URL: https://www.heltar.com/blogs/author/prashant-jangid
Published: 2025-01-02
Category: Troubleshoot
Category URL: https://www.heltar.com/blogs/category/troubleshoot
Tags: WhatsApp API Error
Tag URLs: WhatsApp API Error (https://www.heltar.com/blogs/tag/whatsapp-api-error)
URL: https://www.heltar.com/blogs/troubleshooting-whatsapp-api-error-133010-phone-number-not-registered-cm5fesvun0015kg77n4zwb52i

If you're encountering **Error 133010** while using the WhatsApp Business API, it means the phone number you're attempting to use has not been registered on the platform. This guide will help you understand the issue and provide steps to resolve it.

## Steps to Resolve Error 133010

1. Make a POST request to the PHONE\_NUMBER\_ID/register endpoint.

2. Include the following in your request:


   - Phone Number ID: The unique identifier for your business phone number.

   - Access Token: Must have the whatsapp\_business\_management permission.

   - Additional parameters required by the API which include messaging\_product, pin, data\_localization\_region(optional).

#### Example Request

```
curl 'https://graph.facebook.com/v21.0/106540352242922/register ' \-H 'Content-Type: application/json' \-H 'Authorization: Bearer EAAJB...' \-d '{"messaging_product": "whatsapp","pin": "212834"}
```

For more details, refer to the [official WhatsApp Business API endpoint documentation](https://developers.facebook.com/docs/whatsapp/cloud-api/reference/registration). For more troubleshooting tips related to WhatsApp Business API, check out our other blogs at [heltar.com/blogs](https://heltar.com/blogs).


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