Variable: PricingActionScaling

const PricingActionScaling: ZodEnum<{
  once: "once";
  per_unit: "per_unit";
}>;

Defined in: shared/pricing/types/actions.ts:39

How a flat-method action's value interacts with line quantity:

• "once" (default): the action contributes value cents literally, regardless of line quantity (e.g. a one-time booking fee).
• "per_unit": the action contributes value × quantity cents, where quantity is the line's resolved unit count (e.g. $15/night × 3 nights = $45).

Order-level rules can't carry "per_unit" (the order has no quantity dimension to scale against) — PricingDomainConfig rejects that combination at parse time.

Percentage-method actions ignore scaling entirely: a percentage of a quantity-scaled subtotal is already quantity-scaled, so applying per_unit semantics on top would double-count.