FAILURE MAP
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FA-95476 / Shipping rate zone lookup / Open access

Size classes: 50 lb exactly treated as heavy · case 01

Parcels of exactly 50 lb are charged the weight handling fee.

Verified by executionVariant 1 · 8 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The weight handling threshold is inclusive.

VERIFIED REPAIR

Apply AHS_WEIGHT only above 50 lb.

Unsuccessful approach: Truncating the weight misses parcels between 50 and 51 lb.

Case contract

dims inches (any order), weight lb. length = longest side, girth = 2*(other two). UNSHIPPABLE if length > 108, length+girth > 165 or weight > 150. Otherwise OVERSIZE if length+girth > 130; else AHS_DIM if length > 48 or second-longest > 30. AHS_WEIGHT if weight > 50 (independent). Return list of codes.

Why this case matters

Size and weight classes decide handling fees and service eligibility.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(dims, weight):
    L, s2, s3 = sorted(dims, reverse=True)
    size = L + 2 * (s2 + s3)
    if L > 108 or size > 165 or weight > 150:
        return ['UNSHIPPABLE']
    codes = []
    if size > 130:
        codes.append('OVERSIZE')
    elif L > 48 or s2 > 30:
        codes.append('AHS_DIM')
    if weight >= 50:
        codes.append('AHS_WEIGHT')
    return codes
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['second side', [[40, 31, 10], 5], ['AHS_DIM']], ['generated mix 6', [[110, 108, 110], 70], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['weight flags both', [[49, 10, 10], 50.5], ['AHS_DIM', 'AHS_WEIGHT']], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['generated mix 10', [[20, 110, 110], 151], ['UNSHIPPABLE']], ['generated mix 18', [[60, 100, 108], 50], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['generated mix 20', [[100, 60, 60], 50.5], ['UNSHIPPABLE']], ['generated mix 29', [[60, 20, 40], 50], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['weight flags both', [[49, 10, 10], 50.5], ['AHS_DIM', 'AHS_WEIGHT']], ['length edge', [[48, 20, 10], 5], []], ['too heavy', [[10, 10, 10], 151], ['UNSHIPPABLE']], ['exact 130', [[50, 20, 20], 5], ['AHS_DIM']], ['second side', [[40, 31, 10], 5], ['AHS_DIM']], ['generated mix 32', [[108, 80, 31], 151], ['UNSHIPPABLE']], ['generated mix 40', [[48, 110, 30], 50.5], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['generated mix 43', [[31, 20, 80], 5], ['UNSHIPPABLE']], ['generated mix 51', [[100, 49, 48], 50.5], ['UNSHIPPABLE']]]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(*args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
generated mix 1['OVERSIZE', 'AHS_WEIGHT']['OVERSIZE']Failed
generated mix 21['OVERSIZE', 'AHS_WEIGHT']['OVERSIZE', 'AHS_WEIGHT']Passed
oversize['OVERSIZE']['OVERSIZE']Passed
length edge[][]Passed
oversize and heavy['OVERSIZE', 'AHS_WEIGHT']['OVERSIZE', 'AHS_WEIGHT']Passed
girth limit['UNSHIPPABLE']['UNSHIPPABLE']Passed
second side['AHS_DIM']['AHS_DIM']Passed
generated mix 6['UNSHIPPABLE']['UNSHIPPABLE']Passed

SHA-256 / 84e35c712a24866f9365d47365282ee4d83e9ff162aa447dcfc325a2c998b919

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(dims, weight):
    L, s2, s3 = sorted(dims, reverse=True)
    size = L + 2 * (s2 + s3)
    if L > 108 or size > 165 or weight > 150:
        return ['UNSHIPPABLE']
    codes = []
    if size > 130:
        codes.append('OVERSIZE')
    elif L > 48 or s2 > 30:
        codes.append('AHS_DIM')
    if int(weight) > 50:
        codes.append('AHS_WEIGHT')
    return codes
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['second side', [[40, 31, 10], 5], ['AHS_DIM']], ['generated mix 6', [[110, 108, 110], 70], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['weight flags both', [[49, 10, 10], 50.5], ['AHS_DIM', 'AHS_WEIGHT']], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['generated mix 10', [[20, 110, 110], 151], ['UNSHIPPABLE']], ['generated mix 18', [[60, 100, 108], 50], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['generated mix 20', [[100, 60, 60], 50.5], ['UNSHIPPABLE']], ['generated mix 29', [[60, 20, 40], 50], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['weight flags both', [[49, 10, 10], 50.5], ['AHS_DIM', 'AHS_WEIGHT']], ['length edge', [[48, 20, 10], 5], []], ['too heavy', [[10, 10, 10], 151], ['UNSHIPPABLE']], ['exact 130', [[50, 20, 20], 5], ['AHS_DIM']], ['second side', [[40, 31, 10], 5], ['AHS_DIM']], ['generated mix 32', [[108, 80, 31], 151], ['UNSHIPPABLE']], ['generated mix 40', [[48, 110, 30], 50.5], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['generated mix 43', [[31, 20, 80], 5], ['UNSHIPPABLE']], ['generated mix 51', [[100, 49, 48], 50.5], ['UNSHIPPABLE']]]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(*args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
generated mix 1['OVERSIZE']['OVERSIZE']Passed
generated mix 21['OVERSIZE']['OVERSIZE', 'AHS_WEIGHT']Failed
oversize['OVERSIZE']['OVERSIZE']Passed
length edge[][]Passed
oversize and heavy['OVERSIZE', 'AHS_WEIGHT']['OVERSIZE', 'AHS_WEIGHT']Passed
girth limit['UNSHIPPABLE']['UNSHIPPABLE']Passed
second side['AHS_DIM']['AHS_DIM']Passed
generated mix 6['UNSHIPPABLE']['UNSHIPPABLE']Passed

SHA-256 / 49e8041d125b628797dceec3e4867e875355599b254d10f4a2af55c47309ea1d

3 / The verified repair

Exit 0
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(dims, weight):
    L, s2, s3 = sorted(dims, reverse=True)
    size = L + 2 * (s2 + s3)
    if L > 108 or size > 165 or weight > 150:
        return ['UNSHIPPABLE']
    codes = []
    if size > 130:
        codes.append('OVERSIZE')
    elif L > 48 or s2 > 30:
        codes.append('AHS_DIM')
    if weight > 50:
        codes.append('AHS_WEIGHT')
    return codes
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = [[['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['second side', [[40, 31, 10], 5], ['AHS_DIM']], ['generated mix 6', [[110, 108, 110], 70], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['weight flags both', [[49, 10, 10], 50.5], ['AHS_DIM', 'AHS_WEIGHT']], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['generated mix 10', [[20, 110, 110], 151], ['UNSHIPPABLE']], ['generated mix 18', [[60, 100, 108], 50], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['generated mix 20', [[100, 60, 60], 50.5], ['UNSHIPPABLE']], ['generated mix 29', [[60, 20, 40], 50], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['weight flags both', [[49, 10, 10], 50.5], ['AHS_DIM', 'AHS_WEIGHT']], ['length edge', [[48, 20, 10], 5], []], ['too heavy', [[10, 10, 10], 151], ['UNSHIPPABLE']], ['exact 130', [[50, 20, 20], 5], ['AHS_DIM']], ['second side', [[40, 31, 10], 5], ['AHS_DIM']], ['generated mix 32', [[108, 80, 31], 151], ['UNSHIPPABLE']], ['generated mix 40', [[48, 110, 30], 50.5], ['UNSHIPPABLE']]], [['generated mix 1', [[10, 40, 40], 50], ['OVERSIZE']], ['generated mix 21', [[49, 48, 10], 50.5], ['OVERSIZE', 'AHS_WEIGHT']], ['oversize and heavy', [[60, 20, 20], 70], ['OVERSIZE', 'AHS_WEIGHT']], ['girth limit', [[110, 10, 10], 5], ['UNSHIPPABLE']], ['oversize', [[10, 60, 30], 10], ['OVERSIZE']], ['length edge', [[48, 20, 10], 5], []], ['generated mix 43', [[31, 20, 80], 5], ['UNSHIPPABLE']], ['generated mix 51', [[100, 49, 48], 50.5], ['UNSHIPPABLE']]]]
for label, args, expected in fixtures[N-1]:
    check(label, solve(*args), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
generated mix 1['OVERSIZE']['OVERSIZE']Passed
generated mix 21['OVERSIZE', 'AHS_WEIGHT']['OVERSIZE', 'AHS_WEIGHT']Passed
oversize['OVERSIZE']['OVERSIZE']Passed
length edge[][]Passed
oversize and heavy['OVERSIZE', 'AHS_WEIGHT']['OVERSIZE', 'AHS_WEIGHT']Passed
girth limit['UNSHIPPABLE']['UNSHIPPABLE']Passed
second side['AHS_DIM']['AHS_DIM']Passed
generated mix 6['UNSHIPPABLE']['UNSHIPPABLE']Passed

SHA-256 / c0ed4c04a031fab86122370d9bea803519dd7734823912f22edcbe8c9460fd89

Verification & scope

Stipulated thresholds; not a carrier service guide. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:52:13.980168+00:00.

Case digest / 79204ba5f6e8c1a1de207a5c9d5c97ac7b777fad2dcd04f0444b5a0d812e3ed9