Create a WhatsApp group on one of your WHATSAPP_OFFICIAL channels.

Creation is asynchronous. This call returns a requestId immediately; WhatsApp then creates the group and notifies us, typically within a few seconds. To obtain the group's chatId:

1. Poll GET /api/wp-crm/groups/:orgId/creation-status/:requestId until status is created, or
2. Subscribe to the group.created webhook — its payload carries the same request_id plus the chat_id.

The returned chatId is a normal chat id — use it to send messages (POST /api/wp-crm/messaging/send-message), assign users/teams (POST /api/wp-crm/chat-assignments/...), and read the conversation (GET /api/wp-crm/chats/...).

A new group contains only your business number. Add members with the participants endpoint or share the invite link.

Security:

• The organisationId in the URL must match the organisation your JWT was issued for — requests for a different organisation fail with 401.
• Requires CRM_ADMIN, ACCOUNT_OWNER, or CRM_BOT role; other roles receive 403.
• Groups are only supported on WHATSAPP_OFFICIAL channels whose number is an Official Business Account (OBA); ineligible numbers receive 422.