FA-95437 / Shipping rate zone lookup / Member archive

Surcharges: residential area uplift missing · case 02

Residential deliveries in surcharge areas are billed the commercial area fee.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

Cents. Residential 550; delivery area DAS 395 or EXT 510, plus 100 when the delivery is residential. Fuel = fuel_bp basis points of (base + residential + delivery area), rounded half up to the cent. Declared value (whole dollars): first $100 free, then 105 cents per $100 or part. Return [fuel, declared_value_fee, total].

Why this case matters

Accessorials and fuel are layered on the zone rate in a fixed order.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
generated mix 14	`[426, 945, 4776]`	`[438, 945, 4888]`	Failed

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