Collect payment for billable order positions already present in procedure state.
Prerequisites (implicit): Positions from Position hinzufügen (AddPositionToOrder), Von Menü bestellen (OrderFromMenu), Nächte-Position hinzufügen (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): Reservierung erstellen (SyncReservationEntry) and/or Bestellung erstellen (SyncOrderEntry) → Rechnung erstellen (SyncInvoiceEntry) → Gast via E-Mail informieren (InformGuestViaEmail) → Betreiber informieren (InformOperator), sometimes Nachbestellungsmenü (ReOrderMenu) or a closing Prozedur blockieren (TextBlocker).
See patterns booking-with-payment, booking-classic-occupancy, and booking-menu-checkout.