What the agent does
- Identify the contract that governs the booking by shipper, trade lane and validity date
- Extract the free-time terms and compare with the tariff terms on the invoice
- Recompute under the contract and flag the invoice as tariff-rated
What you get back
Dispute file with the contract reference and free-time clause; a note to the carrier's billing team to re-rate.
Why contract vs tariff matters
| Tariff | 3 days free | then USD 150/day |
| Contract SC-2026-118 §3.1 | 7 days free | then USD 110/day |
| Effect on this container | −4 chargeable days and −USD 40/day on the rest | USD 740 over-billed |
Illustrative output. Figures and names are examples, not customer data.