Variable: FeeAction

const FeeAction: ZodObject<{
  adjustmentKind: ZodDefault<ZodEnum<{
     fee: "fee";
     platform_fee: "platform_fee";
     tax: "tax";
  }>>;
  glCode: ZodOptional<ZodString>;
  label: ZodString;
  method: ZodEnum<{
     flat: "flat";
     percentage: "percentage";
  }>;
  responsibleParty: ZodOptional<ZodEnum<{
     platform: "platform";
     processor: "processor";
     tax_authority: "tax_authority";
     tenant: "tenant";
  }>>;
  scaling: ZodDefault<ZodEnum<{
     once: "once";
     per_unit: "per_unit";
  }>>;
  type: ZodLiteral<"FEE">;
  value: ZodNumber;
}, $strip>;

Defined in: shared/pricing/types/actions.ts:152

Surcharge applied on top of an existing subtotal. label is the human-readable description for invoicing. Accounting classification now rides natively on the action: adjustmentKind distinguishes an ordinary fee from a tax or platform_fee, while responsibleParty / glCode route the money. These are pure passthrough — the engine never reads them; the calculator carries them into every AppliedAction.

scaling only affects method: "flat" actions on line-level rules. See PricingActionScaling above; PricingDomainConfig enforces the level/scaling invariants.