> ## Documentation Index > Fetch the complete documentation index at: https://whatsapp-docs.kap.so/llms.txt > Use this file to discover all available pages before exploring further. # Phone number deregister api # WhatsApp Cloud API - Phone Number Deregister API Copy for LLM [View as Markdown](https://developers.facebook.com/documentation/business-messaging/whatsapp/reference/whatsapp-business-phone-number/phone-number-deregister-api/v23.0.md/) Version v23.0 API for deregistering WhatsApp Business phone numbers from the Facebook Hosted System. This endpoint allows businesses to deregister a previously registered phone number from the WhatsApp Business Platform. ## Base URL \| [https://graph.facebook.com](https://graph.facebook.com) | ## Endpoints \| POST | [/{Version}/{Phone-Number-ID}/deregister](https://developers.facebook.com/documentation/business-messaging/whatsapp/reference/whatsapp-business-phone-number/phone-number-deregister-api#post-version-phone-number-id-deregister) | *** ## POST /{Version}/{Phone-Number-ID}/deregister Deregister a WhatsApp Business phone number from the Facebook Hosted System. This operation removes the phone number from the WhatsApp Business Platform and makes it available for re-registration if needed. Important Notes: Phone number must be currently linked in Facebook Hosted System Phone number must be registered on the WhatsApp Business Platform Cannot deregister phone numbers associated with SMB accounts Rate limiting is enforced to prevent abuse Deregistration triggers activity logging for audit purposes Rate Limiting: Standard Graph API rate limits apply with additional restrictions for registration operations. Use appropriate retry logic with exponential backoff. Caching: Deregistration status changes are immediate and should not be cached. ### Request Syntax **POST**/{Version}/{Phone-Number-ID}/deregister Try it Select language cURLJavaScriptPython *** ``` curl --request POST \   --url 'https://graph.facebook.com/{Version}/{Phone-Number-ID}/deregister' \   --header 'Authorization: Bearer ' \   --header 'Content-Type: application/json' \   --data '{}' ``` Select status code 200400401403404422429500 *** ``` \{   "successful_deregistration": {     "summary": "Successful phone number deregistration",     "value": {       "success": true     }   } } ``` Header Parameters *** User-Agentstring The user agent string identifying the client software making the request. Authorizationstring·required Bearer token for API authentication. This should be a valid access token obtained through the appropriate OAuth flow or system user token. Path Parameters *** Versionstring·required Graph API version to use for this request. Determines the API behavior and available features. Phone-Number-IDstring·required The ID of the phone number to deregister. This ID is provided when you register the phone number and can be found in your WhatsApp Business Account settings. Responses *** Deregister a WhatsApp Business phone number from the Facebook Hosted System. This operation removes the phone number from the WhatsApp Business Platform and makes it available for re-registration if needed. Important Notes: Phone number must be currently linked in Facebook Hosted System Phone number must be registered on the WhatsApp Business Platform Cannot deregister phone numbers associated with SMB accounts Rate limiting is enforced to prevent abuse Deregistration triggers activity logging for audit purposes Rate Limiting: Standard Graph API rate limits apply with additional restrictions for registration operations. Use appropriate retry logic with exponential backoff. Caching: Deregistration status changes are immediate and should not be cached. 200 Successfully deregistered the phone number Content Type: application/json Schema: DeregisterResponse Show child attributes *** DeregisterResponse *** successboolean·required Indicates whether the deregistration was successful 400 Bad Request - Invalid parameters or phone number state Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes 401 Unauthorized - Invalid or missing access token Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes 403 Forbidden - Insufficient permissions or access denied Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes 404 Not Found - Phone number ID does not exist or is not accessible Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes 422 Unprocessable Entity - Request parameters are valid but cannot be processed Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes 429 Too Many Requests - Rate limit exceeded Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes 500 Internal Server Error - Unexpected server error Content Type: application/json Schema: GraphAPIError Show child attributes *** GraphAPIError *** errorobject·required Show child attributes *** messagestring·required Human-readable error message *** typestring·required Error category type *** codeinteger·required Numeric error code *** error\_subcodeinteger More specific error subcode when available *** fbtrace\_idstring Unique identifier for debugging and support requests with Meta *** is\_transientboolean Indicates whether this error is temporary and the request should be retried *** error\_user\_titlestring User-friendly error title for display purposes *** error\_user\_msgstring User-friendly error message for display purposes Select language cURLJavaScriptPython *** ``` curl --request POST \   --url 'https://graph.facebook.com/{Version}/{Phone-Number-ID}/deregister' \   --header 'Authorization: Bearer ' \   --header 'Content-Type: application/json' \   --data '{}' ``` Select status code 200400401403404422429500 *** ``` \{   "successful_deregistration": {     "summary": "Successful phone number deregistration",     "value": {       "success": true     }   } } ``` ## Authentication \| **Scheme** | **Type** | **Location** | \| bearerAuth | HTTP Bearer | Header: Authorization | ### Usage Examples bearerAuth: Include Authorization: Bearer your-token-here in request headers ### Global Authentication Requirements All endpoints require: bearerAuth Did you find this page helpful? ![Thumbs up icon](https://static.xx.fbcdn.net/rsrc.php/yR/r/OEXJ0_DJeZv.svg) ![Thumbs down icon](https://static.xx.fbcdn.net/rsrc.php/yb/r/qKPgNVNeatU.svg) ***