Collect payment for billable order positions already present in procedure state.
Prerequisites (implicit): Positions from Ajouter une position (AddPositionToOrder), Commander à partir du menu (OrderFromMenu), Ajouter position de nuits (AddNightsToOrder), or stashed reorder positions. Completes immediately when the gross total is zero.
Configuration highlights: Payment provider, invoice template, optional fiscalization, allow-waiting-payment.
Typical place in the funnel: After pricing (and usually contact/address); almost always followed by sync + notify.
Downstream (very stable in live data): Créer une réservation (SyncReservationEntry) and/or Créer une commande (SyncOrderEntry) → Créer une facture (SyncInvoiceEntry) → Informez les clients par e-mail (InformGuestViaEmail) → Informer les opérateurs (InformOperator), sometimes Réorganiser le menu (ReOrderMenu) or a closing Procédure de blocage (TextBlocker).
See patterns booking-with-payment, booking-classic-occupancy, and booking-menu-checkout.