Account Groups4

Account Settings18

Accounts19

Ad Accounts63

Ad Audiences7

Ad Campaigns62

Ad Creatives18

Ad Insights11

Ad Library1

Ad Targeting5

Analytics28

API Keys4

Blogs10

Branded Calling17

Broadcasts10

Business Agent55

Calls3

Changelog1

Comment Automations6

Comments15

Commerce74

Connect58

Connected Apps2

Contacts7

Conversions21

Custom Fields6

Discord24

Feedback1

GMB Attributes3

GMB Food Menus2

GMB Location Details2

GMB Media3

GMB Place Actions4

GMB Reviews5

GMB Services2

GMB Verifications4

iMessage20

Inbox Analytics7

Instagram6

Invites1

Lead Gen8

LinkedIn Mentions1

Logs1

Media1

Mentions2

Messages17

Messaging Ads3

Phone Numbers31

Posts10

Product Catalogs19

Products3

Profiles5

Queue6

RCS13

Reach and Frequency4

Reddit Search2

Reviews3

Sequences10

Slack1

SMS22

Tools1

Tracking Tags22

Twitter Engagement8

Usage6

Users2

Validate4

Verify3

Voice18

Webhooks7

WhatsApp49

WhatsApp Calling16

WhatsApp Flows15

WhatsApp Phone Numbers17

WhatsApp Sandbox3

WhatsApp Templates1

Workflows15

Webhooks

Webhook Events79

Phone Numbers

Request the WhatsApp verification code for a number

Starts (or restarts) WhatsApp verification of a Zernio-hosted number: adds it to Meta's pre-verified pool when needed and asks Meta to send the verification code, which Zernio captures on the number itself. Used to connect WhatsApp on a number bought for calls or SMS. /v1/whatsapp/phone-numbers/{id}/request-code is a deprecated alias with the same contract.

When Meta refuses the number for WhatsApp (Meta error 136021): a number that is already live (active or suspended) is left untouched and keeps working for calls and SMS, and the call answers 409 number_not_whatsapp_eligible; buy a new number with WhatsApp enabled instead. A number that was never live (still verifying) is replaced at no extra cost with a WhatsApp-eligible number on the same record, answered as 200 with replaced: true.

post/v1/phone-numbers/{id}/whatsapp/request-code

Path parameters

idstring required

Phone number record ID (from GET /v1/phone-numbers).

Request body

method'SMS' | 'VOICE'

Delivery method for the code. Omit to let Zernio pick (SMS when the number can receive it, else VOICE).

Response

Code requested, or the number was already verified, or a never-live number was replaced.

messagestring

method'SMS' | 'VOICE'

alreadyVerifiedboolean

Meta already reports the number as verified. No code is sent and the number is activated.

replacedboolean

Meta refused the original number, which had never been live, so it was replaced on the same record.

newPhoneNumberstring

The replacement number, present when replaced is true.

Changes

Changed in 2 of the 68 revisions of this API.31

Oct 6, 2026f8c8f34fb41a3See the full diff
- ●
  added the new account enum value to the / response property for the response status
  response-property-enum-value-added
- ●
  added the new account enum value to the / response property for the response status
  response-property-enum-value-added
- ●
  added the new account enum value to the / response property for the response status
  response-property-enum-value-added
This revision also has 1 change that name no endpoint, such as unreferenced schemas being removed. See the revision's changelog
Oct 2, 2026d556591af3f61See the full diff
- ○
  endpoint added
  endpoint-added

Full history