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Not callable with an API key. A POST /channels/whatsapp/send-template endpoint does exist, but it’s internal — it requires a service token rather than a tenant API key, so it has no request runner here.The supported way to send pre-approved templates is through a WhatsApp Campaign — a campaign maps each call outcome to a template and sends it automatically.

Creating a WhatsApp campaign with templates

  • phoneNumberId — from GET /whatsapp/fetch-numbers (campaign-engine)
  • templates — each entry maps a callStatus (ANSWERED/UNANSWERED) to an approved Meta template name; list approved templates via GET /whatsapp/meta-templates
See Create campaign for the general campaign lifecycle (start, monitor, etc.).