RateAccessorial

One priced accessorial. basis is what lets a flat permit charge and a per-mile oversize charge share one shape.

amount
Type: number
required

The amount, read according to basis. A PER_MILE amount is the rate per mile, not the extended total.
basis
Type: "FLAT" or "PER_MILE" or "PER_STOP"enum
required

How amount applies. FLAT is charged once for the shipment, PER_MILE is multiplied by the route mileage, and PER_STOP is charged for each stop beyond the first pickup and last delivery.
code
Type:
required

Accessorial code representing an additional service or requirement for a load. This is not a closed set — new accessorial codes may be added at any time. Values are normalized to UPPER_SNAKE_CASE (e.g., inside delivery → INSIDE_DELIVERY).
label
Type: string | null

The charge as the provider words it, shown to the rep