Purchase phone number

Initiate purchasing a WhatsApp phone number. Payment-first flow: the user does not pick a specific number. The system either creates a Stripe Checkout Session (first number) or increments the existing subscription quantity and provisions inline (subsequent numbers). Requires a paid plan. The maximum number of phone numbers is determined by the user's plan.

import Zernio from '@zernio/node';const zernio = new Zernio({ apiKey: process.env.ZERNIO_API_KEY });const { data } = await zernio.whatsappphonenumbers.purchaseWhatsAppPhoneNumber({  body: {    profileId: 'profile_abc123',  },});console.log(data);

{
  "message": "string",
  "checkoutUrl": "http://example.com"
}

{
  "error": "Unauthorized"
}