Live Demo · Freight Audit Engine

Freight Invoice Anomaly Detection

Ten real-world LTL invoice lines. Five anomaly classes. Watch the engine flag overcharges, duplicates, and accessorial errors in real time.

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Invoices Analyzed
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Anomalies Detected
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Estimated Recovery

Invoice Register

10 line items loaded
Invoice Carrier Lane Wt (lb) Rate Total Status
INV-2026-0441 FedEx Freight CHI-ATL 1840 $0.2118 $473.51
INV-2026-0442 XPO Logistics NYC-MIA 2250 $0.2103 $763.54
INV-2026-0443 Estes Express ATL-DFW 3100 $0.1654 $620.97
INV-2026-0444 Old Dominion LAX-SEA 980 $0.2241 $266.51
INV-2026-0445 Saia LTL Freight DAL-HOU 560 $0.1433 $97.50
INV-2026-0446 FedEx Freight CHI-DAL 1450 $0.1975 $347.53
INV-2026-0447 XPO Logistics NYC-CHI 2250 $0.1887 $516.76
INV-2026-0448 Estes Express ATL-CLT 720 $0.1521 $133.05
INV-2026-0449 Old Dominion LAX-PHX 430 $0.1788 $118.62
INV-2026-0450 Saia LTL Freight DAL-OKC 890 $0.1389 $149.98

Anomaly Report

Hit Run Analysis to scan invoices for billing anomalies.

How the Detection Works

The engine runs five independent detection passes against each invoice, cross-referencing contracted rate tables, BOL records, TMS appointment logs, and the EIA weekly diesel price index.

Rate Overcharge
Compares each billed $/lb against the master contract for that carrier/lane pair. Flags any invoice where the billed rate exceeds the contracted rate by more than 0.5%.
Duplicate Invoice
Hashes PRO number + invoice date. Any collision after the first occurrence is surfaced as a potential duplicate billing.
Accessorial Anomaly
Scans for detention line items, then cross-checks the TMS for a matching delivery appointment record. No appointment = unvalidated charge.
Weight Discrepancy
Compares billed weight against the original BOL weight. Variances above 10 lb are flagged with the resulting dollar overcharge calculated.
Fuel Surcharge Error
Looks up the EIA diesel price band for the ship week, then validates the applied FSC percentage against the carrier's published index. Tolerates ±0.5 percentage points.

See the full architecture behind this engine

The case study explains how Arc Data built a production-grade freight audit pipeline for a 47-DC 3PL network — including the contract normalization layer, carrier EDI ingestion, and the LLM-assisted accessorial validation module.

Read the Freight Audit Case Study