| Bonded warehouse — no duty, no exit | 125 | a state machine, a memory invariant, try / catch |
| Cold-chain custody — a warm vaccine never gets cold again | 105 | a state machine, a memory invariant, try / catch |
| Container seal — a broken seal cannot be quietly replaced | 108 | a state machine, a memory invariant, match, try / catch |
| Container weight — the misdeclared box that breaks the ship | 97 | a state machine, a memory invariant, try / catch |
| Customs clearance — no release without an examination verdict | 112 | a state machine, a memory invariant, try / catch |
| Dock door interlock — the trailer that drives off with the forklift | 86 | a state machine, try / catch |
| Gate appointments — a dock door cannot be double-booked | 100 | a memory invariant |
| Hazmat bay segregation — Beirut, as a state that cannot exist | 120 | a state machine, a memory invariant, try / catch |
| Inventory conservation — stock never teleports, never goes negative | 92 | a memory invariant, pipes (|>), try / catch, lambdas |
| Package tracking — delivered is FOREVER | 84 | a state machine, a memory invariant, try / catch |
| Proof of delivery — no signature, no "delivered" | 105 | a state machine, try / catch |
| Rack slot capacity — the pallet that brings down the aisle | 85 | a memory invariant, try / catch |
| Recall quarantine — the recalled lot that ships anyway | 110 | a state machine, a memory invariant, try / catch |
| Reefer setpoint — the typo that thaws forty tonnes of tuna | 111 | a state machine, a memory invariant, try / catch |
| Uld loadmaster — National Airlines 102, refused at the manifest | 111 | a state machine, a memory invariant, try / catch |