{"abstract":"A receipt is put into a bin of a different SKU that happens to share the lot code.","category":"Warehouse slotting and bin packing","checks":8,"contract":"bins [[bin, sku|None, lot, expiry_day, qty, capacity, distance]]; receipt [sku, lot, expiry_day, qty]. A bin is empty when sku is None or qty is 0. Preference: (1) non-empty bin with same sku and lot and room (capacity-qty >= receipt qty), nearest then id; (2) same sku, different lot, expiry within 30 days either way, room; smallest expiry gap, nearest, id; (3) empty bin with capacity >= qty, nearest then id; else \"HOLD\".","contract_signature":"bins, receipt","evaluation_group":"w2-warehouse-slotting-fefo-putaway","failed_approach":"Matching SKU alone gives any lot of the SKU top priority, bypassing the expiry window.","family":"w2-warehouse-slotting-fefo-putaway-lot-identity","id":"FA-95066","implementations":{"attempt":{"sha256":"005ba8181ee8a186ffc90d9650705eab9c6d861b2127f803eb851ab6d6a299b7","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(bins, receipt):\n    sku, lot, exp, q = receipt\n    def room(b):\n        return b[5] - b[4] >= q\n    def empty(b):\n        return b[1] is None or b[4] == 0\n    same_lot = [b for b in bins if not empty(b) and b[1] == sku and room(b)]\n    if same_lot:\n        return min(same_lot, key=lambda b: (b[6], b[0]))[0]\n    mixed = [b for b in bins if not empty(b) and b[1] == sku and b[2] != lot and abs(b[3] - exp) <= 30 and room(b)]\n    if mixed:\n        return min(mixed, key=lambda b: (abs(b[3] - exp), b[6], b[0]))[0]\n    free = [b for b in bins if empty(b) and b[5] >= q]\n    if free:\n        return min(free, key=lambda b: (b[6], b[0]))[0]\n    return 'HOLD'\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['generated mix 3', [[['B0', None, None, 0, 0, 60, 5], ['B1', None, None, 0, 0, 60, 4], ['B2', 'S1', 'L1', 145, 30, 60, 2], ['B3', 'S2', 'L2', 100, 40, 20, 1], ['B4', 'S2', 'L1', 131, 30, 40, 2], ['B5', 'S1', 'L1', 145, 30, 40, 7]], ['S1', 'L4', 100, 10]], 'B1'], ['same lot preferred', [[['A', 'S1', 'L1', 100, 10, 40, 9], ['B', 'S1', 'L2', 100, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['residual label empty', [[['R', 'S9', 'L7', 50, 0, 60, 2], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'R'], ['room exact', [[['A', 'S1', 'L1', 100, 20, 40, 9], ['E', None, None, 0, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['generated mix 7', [[['B0', 'S1', 'L1', 130, 10, 40, 3], ['B1', 'S2', 'L3', 160, 30, 20, 2], ['B2', 'S1', 'L2', 145, 0, 20, 1]], ['S2', 'L4', 130, 20]], 'B2'], ['generated mix 15', [[['B0', 'S1', 'L2', 145, 40, 20, 2], ['B1', 'S2', 'L1', 145, 40, 60, 3], ['B2', 'S1', 'L1', 100, 30, 40, 3], ['B3', 'S1', 'L2', 145, 5, 60, 3], ['B4', 'S1', 'L1', 131, 0, 20, 6], ['B5', None, None, 0, 0, 40, 9]], ['S2', 'L4', 150, 20]], 'B1']], [['generated mix 50', [[['B0', 'S2', 'L3', 160, 0, 40, 6], ['B1', 'S1', 'L2', 130, 0, 40, 1], ['B2', 'S2', 'L1', 130, 10, 60, 1]], ['S1', 'L1', 100, 30]], 'B1'], ['generated mix 31', [[['B0', 'S1', 'L1', 145, 5, 60, 4], ['B1', None, None, 0, 0, 60, 7], ['B2', 'S1', 'L3', 160, 10, 60, 7], ['B3', 'S1', 'L1', 160, 0, 60, 8]], ['S1', 'L2', 100, 10]], 'B1'], ['expiry 31 days', [[['A', 'S1', 'L2', 131, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'E'], ['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['same lot preferred', [[['A', 'S1', 'L1', 100, 10, 40, 9], ['B', 'S1', 'L2', 100, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['generated mix 9', [[['B0', 'S1', 'L2', 160, 40, 40, 1], ['B1', 'S1', 'L1', 131, 40, 40, 1], ['B2', 'S1', 'L3', 145, 0, 60, 1], ['B3', 'S1', 'L2', 100, 10, 20, 7], ['B4', 'S2', 'L1', 100, 30, 60, 5]], ['S1', 'L4', 150, 20]], 'B2'], ['generated mix 17', [[['B0', 'S2', 'L2', 120, 0, 20, 8], ['B1', 'S1', 'L2', 131, 5, 40, 3], ['B2', 'S2', 'L2', 100, 10, 20, 8], ['B3', 'S2', 'L2', 100, 10, 60, 6], ['B4', 'S1', 'L3', 100, 30, 40, 3], ['B5', 'S1', 'L1', 145, 10, 60, 5]], ['S1', 'L4', 150, 20]], 'B5']], [['generated mix 30', [[['B0', None, None, 0, 0, 40, 2], ['B1', 'S2', 'L2', 130, 10, 60, 9], ['B2', None, None, 0, 0, 60, 4], ['B3', None, None, 0, 0, 60, 7], ['B4', 'S1', 'L3', 145, 0, 40, 8], ['B5', 'S1', 'L1', 160, 40, 60, 5], ['B6', 'S1', 'L3', 130, 5, 40, 3]], ['S1', 'L2', 100, 10]], 'B6'], ['generated mix 66', [[['B0', 'S1', 'L1', 130, 40, 20, 8], ['B1', 'S2', 'L3', 120, 5, 20, 9], ['B2', 'S1', 'L1', 160, 5, 40, 2]], ['S1', 'L4', 100, 30]], 'HOLD'], ['nothing', [[['X', 'S2', 'L1', 100, 5, 10, 1]], ['S1', 'L1', 100, 20]], 'HOLD'], ['room exact', [[['A', 'S1', 'L1', 100, 20, 40, 9], ['E', None, None, 0, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 31 days', [[['A', 'S1', 'L2', 131, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'E'], ['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['generated mix 20', [[['B0', None, None, 0, 0, 20, 8], ['B1', 'S1', 'L1', 131, 30, 40, 6], ['B2', None, None, 0, 0, 20, 6], ['B3', 'S1', 'L3', 160, 0, 40, 6], ['B4', 'S1', 'L3', 160, 10, 20, 4], ['B5', 'S1', 'L3', 131, 30, 40, 9], ['B6', None, None, 0, 0, 60, 5]], ['S1', 'L4', 130, 20]], 'B6'], ['generated mix 28', [[['B0', 'S1', 'L3', 131, 10, 60, 9], ['B1', 'S2', 'L2', 131, 0, 20, 2], ['B2', 'S2', 'L2', 160, 40, 40, 5]], ['S2', 'L1', 100, 10]], 'B1']], [['generated mix 24', [[['B0', 'S1', 'L1', 131, 10, 40, 3], ['B1', 'S1', 'L2', 131, 5, 40, 9], ['B2', None, None, 0, 0, 60, 9], ['B3', 'S2', 'L1', 120, 40, 40, 8], ['B4', None, None, 0, 0, 60, 8], ['B5', 'S1', 'L3', 160, 0, 40, 6]], ['S2', 'L1', 130, 30]], 'B5'], ['generated mix 5', [[['B0', 'S1', 'L2', 131, 5, 20, 3], ['B1', None, None, 0, 0, 20, 3], ['B2', None, None, 0, 0, 40, 3], ['B3', None, None, 0, 0, 40, 1], ['B4', None, None, 0, 0, 40, 8], ['B5', None, None, 0, 0, 20, 3], ['B6', 'S2', 'L3', 100, 10, 40, 7]], ['S2', 'L2', 150, 20]], 'B3'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['residual label empty', [[['R', 'S9', 'L7', 50, 0, 60, 2], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'R'], ['nothing', [[['X', 'S2', 'L1', 100, 5, 10, 1]], ['S1', 'L1', 100, 20]], 'HOLD'], ['room exact', [[['A', 'S1', 'L1', 100, 20, 40, 9], ['E', None, None, 0, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['generated mix 33', [[['B0', 'S1', 'L1', 130, 10, 40, 6], ['B1', 'S1', 'L3', 160, 40, 40, 3], ['B2', None, None, 0, 0, 20, 1], ['B3', 'S2', 'L2', 160, 5, 60, 8], ['B4', None, None, 0, 0, 40, 4], ['B5', 'S2', 'L2', 131, 5, 60, 8]], ['S1', 'L1', 130, 30]], 'B0'], ['generated mix 41', [[['B0', 'S1', 'L2', 160, 30, 60, 7], ['B1', 'S1', 'L2', 160, 40, 60, 3], ['B2', 'S1', 'L3', 100, 0, 60, 7], ['B3', 'S2', 'L2', 130, 10, 60, 9], ['B4', 'S1', 'L2', 160, 0, 20, 4], ['B5', 'S2', 'L2', 100, 30, 40, 4]], ['S2', 'L1', 130, 30]], 'B3']], [['generated mix 14', [[['B0', 'S2', 'L1', 130, 5, 60, 3], ['B1', 'S2', 'L1', 120, 0, 60, 8], ['B2', None, None, 0, 0, 60, 9]], ['S1', 'L1', 100, 30]], 'B1'], ['generated mix 39', [[['B0', 'S1', 'L2', 120, 30, 20, 3], ['B1', 'S1', 'L3', 145, 0, 20, 4], ['B2', None, None, 0, 0, 40, 6], ['B3', 'S1', 'L3', 131, 30, 60, 9], ['B4', 'S1', 'L1', 100, 5, 60, 7], ['B5', None, None, 0, 0, 40, 4], ['B6', 'S2', 'L2', 100, 30, 60, 6]], ['S1', 'L4', 130, 10]], 'B3'], ['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['same lot preferred', [[['A', 'S1', 'L1', 100, 10, 40, 9], ['B', 'S1', 'L2', 100, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['residual label empty', [[['R', 'S9', 'L7', 50, 0, 60, 2], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'R'], ['generated mix 44', [[['B0', 'S1', 'L2', 145, 10, 60, 3], ['B1', 'S2', 'L1', 145, 0, 60, 6], ['B2', 'S1', 'L1', 131, 0, 40, 6], ['B3', 'S2', 'L1', 145, 40, 20, 8]], ['S1', 'L4', 150, 20]], 'B0'], ['generated mix 52', [[['B0', None, None, 0, 0, 20, 9], ['B1', 'S1', 'L3', 120, 10, 60, 1], ['B2', 'S1', 'L3', 120, 40, 20, 9], ['B3', 'S1', 'L2', 100, 40, 60, 4]], ['S1', 'L4', 100, 10]], 'B3']]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"550f2d7e1cf85de3afe37414ccf542013e7f6d24421df0806cf093e23c6dd501","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(bins, receipt):\n    sku, lot, exp, q = receipt\n    def room(b):\n        return b[5] - b[4] >= q\n    def empty(b):\n        return b[1] is None or b[4] == 0\n    same_lot = [b for b in bins if not empty(b) and b[2] == lot and room(b)]\n    if same_lot:\n        return min(same_lot, key=lambda b: (b[6], b[0]))[0]\n    mixed = [b for b in bins if not empty(b) and b[1] == sku and b[2] != lot and abs(b[3] - exp) <= 30 and room(b)]\n    if mixed:\n        return min(mixed, key=lambda b: (abs(b[3] - exp), b[6], b[0]))[0]\n    free = [b for b in bins if empty(b) and b[5] >= q]\n    if free:\n        return min(free, key=lambda b: (b[6], b[0]))[0]\n    return 'HOLD'\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['generated mix 3', [[['B0', None, None, 0, 0, 60, 5], ['B1', None, None, 0, 0, 60, 4], ['B2', 'S1', 'L1', 145, 30, 60, 2], ['B3', 'S2', 'L2', 100, 40, 20, 1], ['B4', 'S2', 'L1', 131, 30, 40, 2], ['B5', 'S1', 'L1', 145, 30, 40, 7]], ['S1', 'L4', 100, 10]], 'B1'], ['same lot preferred', [[['A', 'S1', 'L1', 100, 10, 40, 9], ['B', 'S1', 'L2', 100, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['residual label empty', [[['R', 'S9', 'L7', 50, 0, 60, 2], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'R'], ['room exact', [[['A', 'S1', 'L1', 100, 20, 40, 9], ['E', None, None, 0, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['generated mix 7', [[['B0', 'S1', 'L1', 130, 10, 40, 3], ['B1', 'S2', 'L3', 160, 30, 20, 2], ['B2', 'S1', 'L2', 145, 0, 20, 1]], ['S2', 'L4', 130, 20]], 'B2'], ['generated mix 15', [[['B0', 'S1', 'L2', 145, 40, 20, 2], ['B1', 'S2', 'L1', 145, 40, 60, 3], ['B2', 'S1', 'L1', 100, 30, 40, 3], ['B3', 'S1', 'L2', 145, 5, 60, 3], ['B4', 'S1', 'L1', 131, 0, 20, 6], ['B5', None, None, 0, 0, 40, 9]], ['S2', 'L4', 150, 20]], 'B1']], [['generated mix 50', [[['B0', 'S2', 'L3', 160, 0, 40, 6], ['B1', 'S1', 'L2', 130, 0, 40, 1], ['B2', 'S2', 'L1', 130, 10, 60, 1]], ['S1', 'L1', 100, 30]], 'B1'], ['generated mix 31', [[['B0', 'S1', 'L1', 145, 5, 60, 4], ['B1', None, None, 0, 0, 60, 7], ['B2', 'S1', 'L3', 160, 10, 60, 7], ['B3', 'S1', 'L1', 160, 0, 60, 8]], ['S1', 'L2', 100, 10]], 'B1'], ['expiry 31 days', [[['A', 'S1', 'L2', 131, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'E'], ['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['same lot preferred', [[['A', 'S1', 'L1', 100, 10, 40, 9], ['B', 'S1', 'L2', 100, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['generated mix 9', [[['B0', 'S1', 'L2', 160, 40, 40, 1], ['B1', 'S1', 'L1', 131, 40, 40, 1], ['B2', 'S1', 'L3', 145, 0, 60, 1], ['B3', 'S1', 'L2', 100, 10, 20, 7], ['B4', 'S2', 'L1', 100, 30, 60, 5]], ['S1', 'L4', 150, 20]], 'B2'], ['generated mix 17', [[['B0', 'S2', 'L2', 120, 0, 20, 8], ['B1', 'S1', 'L2', 131, 5, 40, 3], ['B2', 'S2', 'L2', 100, 10, 20, 8], ['B3', 'S2', 'L2', 100, 10, 60, 6], ['B4', 'S1', 'L3', 100, 30, 40, 3], ['B5', 'S1', 'L1', 145, 10, 60, 5]], ['S1', 'L4', 150, 20]], 'B5']], [['generated mix 30', [[['B0', None, None, 0, 0, 40, 2], ['B1', 'S2', 'L2', 130, 10, 60, 9], ['B2', None, None, 0, 0, 60, 4], ['B3', None, None, 0, 0, 60, 7], ['B4', 'S1', 'L3', 145, 0, 40, 8], ['B5', 'S1', 'L1', 160, 40, 60, 5], ['B6', 'S1', 'L3', 130, 5, 40, 3]], ['S1', 'L2', 100, 10]], 'B6'], ['generated mix 66', [[['B0', 'S1', 'L1', 130, 40, 20, 8], ['B1', 'S2', 'L3', 120, 5, 20, 9], ['B2', 'S1', 'L1', 160, 5, 40, 2]], ['S1', 'L4', 100, 30]], 'HOLD'], ['nothing', [[['X', 'S2', 'L1', 100, 5, 10, 1]], ['S1', 'L1', 100, 20]], 'HOLD'], ['room exact', [[['A', 'S1', 'L1', 100, 20, 40, 9], ['E', None, None, 0, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 31 days', [[['A', 'S1', 'L2', 131, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'E'], ['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['generated mix 20', [[['B0', None, None, 0, 0, 20, 8], ['B1', 'S1', 'L1', 131, 30, 40, 6], ['B2', None, None, 0, 0, 20, 6], ['B3', 'S1', 'L3', 160, 0, 40, 6], ['B4', 'S1', 'L3', 160, 10, 20, 4], ['B5', 'S1', 'L3', 131, 30, 40, 9], ['B6', None, None, 0, 0, 60, 5]], ['S1', 'L4', 130, 20]], 'B6'], ['generated mix 28', [[['B0', 'S1', 'L3', 131, 10, 60, 9], ['B1', 'S2', 'L2', 131, 0, 20, 2], ['B2', 'S2', 'L2', 160, 40, 40, 5]], ['S2', 'L1', 100, 10]], 'B1']], [['generated mix 24', [[['B0', 'S1', 'L1', 131, 10, 40, 3], ['B1', 'S1', 'L2', 131, 5, 40, 9], ['B2', None, None, 0, 0, 60, 9], ['B3', 'S2', 'L1', 120, 40, 40, 8], ['B4', None, None, 0, 0, 60, 8], ['B5', 'S1', 'L3', 160, 0, 40, 6]], ['S2', 'L1', 130, 30]], 'B5'], ['generated mix 5', [[['B0', 'S1', 'L2', 131, 5, 20, 3], ['B1', None, None, 0, 0, 20, 3], ['B2', None, None, 0, 0, 40, 3], ['B3', None, None, 0, 0, 40, 1], ['B4', None, None, 0, 0, 40, 8], ['B5', None, None, 0, 0, 20, 3], ['B6', 'S2', 'L3', 100, 10, 40, 7]], ['S2', 'L2', 150, 20]], 'B3'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['residual label empty', [[['R', 'S9', 'L7', 50, 0, 60, 2], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'R'], ['nothing', [[['X', 'S2', 'L1', 100, 5, 10, 1]], ['S1', 'L1', 100, 20]], 'HOLD'], ['room exact', [[['A', 'S1', 'L1', 100, 20, 40, 9], ['E', None, None, 0, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['generated mix 33', [[['B0', 'S1', 'L1', 130, 10, 40, 6], ['B1', 'S1', 'L3', 160, 40, 40, 3], ['B2', None, None, 0, 0, 20, 1], ['B3', 'S2', 'L2', 160, 5, 60, 8], ['B4', None, None, 0, 0, 40, 4], ['B5', 'S2', 'L2', 131, 5, 60, 8]], ['S1', 'L1', 130, 30]], 'B0'], ['generated mix 41', [[['B0', 'S1', 'L2', 160, 30, 60, 7], ['B1', 'S1', 'L2', 160, 40, 60, 3], ['B2', 'S1', 'L3', 100, 0, 60, 7], ['B3', 'S2', 'L2', 130, 10, 60, 9], ['B4', 'S1', 'L2', 160, 0, 20, 4], ['B5', 'S2', 'L2', 100, 30, 40, 4]], ['S2', 'L1', 130, 30]], 'B3']], [['generated mix 14', [[['B0', 'S2', 'L1', 130, 5, 60, 3], ['B1', 'S2', 'L1', 120, 0, 60, 8], ['B2', None, None, 0, 0, 60, 9]], ['S1', 'L1', 100, 30]], 'B1'], ['generated mix 39', [[['B0', 'S1', 'L2', 120, 30, 20, 3], ['B1', 'S1', 'L3', 145, 0, 20, 4], ['B2', None, None, 0, 0, 40, 6], ['B3', 'S1', 'L3', 131, 30, 60, 9], ['B4', 'S1', 'L1', 100, 5, 60, 7], ['B5', None, None, 0, 0, 40, 4], ['B6', 'S2', 'L2', 100, 30, 60, 6]], ['S1', 'L4', 130, 10]], 'B3'], ['lot code on other sku', [[['X', 'S2', 'L1', 100, 5, 60, 1], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'E'], ['same lot preferred', [[['A', 'S1', 'L1', 100, 10, 40, 9], ['B', 'S1', 'L2', 100, 0, 40, 1]], ['S1', 'L1', 100, 20]], 'A'], ['expiry 30 days later', [[['A', 'S1', 'L2', 130, 10, 60, 5], ['E', None, None, 0, 0, 60, 1]], ['S1', 'L1', 100, 20]], 'A'], ['residual label empty', [[['R', 'S9', 'L7', 50, 0, 60, 2], ['E', None, None, 0, 0, 60, 4]], ['S1', 'L1', 100, 20]], 'R'], ['generated mix 44', [[['B0', 'S1', 'L2', 145, 10, 60, 3], ['B1', 'S2', 'L1', 145, 0, 60, 6], ['B2', 'S1', 'L1', 131, 0, 40, 6], ['B3', 'S2', 'L1', 145, 40, 20, 8]], ['S1', 'L4', 150, 20]], 'B0'], ['generated mix 52', [[['B0', None, None, 0, 0, 20, 9], ['B1', 'S1', 'L3', 120, 10, 60, 1], ['B2', 'S1', 'L3', 120, 40, 20, 9], ['B3', 'S1', 'L2', 100, 40, 60, 4]], ['S1', 'L4', 100, 10]], 'B3']]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"Stipulated day-number expiries and a single receipt; no quarantine or multi-bin splits. 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.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-warehouse-slotting-fefo-putaway-lot-identity","generated_at":"2026-09-29T14:52:10.277805+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"FEFO storage keeps lots with similar expiry together so the earliest expiring stock ships first.","root_cause":"The same-lot rule compares lot codes without requiring the same SKU.","sha256":"24457b071b39ff12e0a1bcfcf00b6f05b43aa613f96a97b3f9197986ef0ea83a","title":"FEFO putaway: lot code matched across SKUs · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":41.324,"exit_code":1,"observations":[{"actual":"E","check":"lot code on other sku","expected":"E","passed":true},{"actual":"B2","check":"generated mix 3","expected":"B1","passed":false},{"actual":"A","check":"same lot preferred","expected":"A","passed":true},{"actual":"A","check":"expiry 30 days later","expected":"A","passed":true},{"actual":"R","check":"residual label empty","expected":"R","passed":true},{"actual":"A","check":"room exact","expected":"A","passed":true},{"actual":"B2","check":"generated mix 7","expected":"B2","passed":true},{"actual":"B1","check":"generated mix 15","expected":"B1","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"lot code on other sku\", \"actual\": \"E\", \"expected\": \"E\", \"passed\": true}, {\"check\": \"generated mix 3\", \"actual\": \"B2\", \"expected\": \"B1\", \"passed\": false}, {\"check\": \"same lot preferred\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}, {\"check\": \"expiry 30 days later\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}, {\"check\": \"residual label empty\", \"actual\": \"R\", \"expected\": \"R\", \"passed\": true}, {\"check\": \"room exact\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}, {\"check\": \"generated mix 7\", \"actual\": \"B2\", \"expected\": \"B2\", \"passed\": true}, {\"check\": \"generated mix 15\", \"actual\": \"B1\", \"expected\": \"B1\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.684,"exit_code":1,"observations":[{"actual":"X","check":"lot code on other sku","expected":"E","passed":false},{"actual":"B1","check":"generated mix 3","expected":"B1","passed":true},{"actual":"A","check":"same lot preferred","expected":"A","passed":true},{"actual":"A","check":"expiry 30 days later","expected":"A","passed":true},{"actual":"R","check":"residual label empty","expected":"R","passed":true},{"actual":"A","check":"room exact","expected":"A","passed":true},{"actual":"B2","check":"generated mix 7","expected":"B2","passed":true},{"actual":"B1","check":"generated mix 15","expected":"B1","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"lot code on other sku\", \"actual\": \"X\", \"expected\": \"E\", \"passed\": false}, {\"check\": \"generated mix 3\", \"actual\": \"B1\", \"expected\": \"B1\", \"passed\": true}, {\"check\": \"same lot preferred\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}, {\"check\": \"expiry 30 days later\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}, {\"check\": \"residual label empty\", \"actual\": \"R\", \"expected\": \"R\", \"passed\": true}, {\"check\": \"room exact\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}, {\"check\": \"generated mix 7\", \"actual\": \"B2\", \"expected\": \"B2\", \"passed\": true}, {\"check\": \"generated mix 15\", \"actual\": \"B1\", \"expected\": \"B1\", \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}