Send a credential request email that the user receives and forwards to the portal entity. The recipient is the point of sale's email when pv_id is given (vehicle ad export flow); otherwise — the brand-level flow used by /settings/portais, which has no PV in scope — it goes to the requesting user's own email.

Payload: { "pv_id": 10, # optional — omit for the brand-level flow "brand_id": 1, "portal_slug": "standvirtual", "portal_title": "StandVirtual", "required_fields": ["Client ID", "Client Secret", "Username", "Password"] }