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Hub for Automated Invoice Validation

A control layer over every invoice before it is paid. Hub cross-validates invoice content against purchasing data, detects duplicates before a second payment leaves, and compares payment terms across the invoice, the purchase order and the vendor record to catch the ones that quietly disagree.

HUB // INVOICE CONTROLSValidation · pre-approval
Hub Controls/Validation · pre-approval
Straight-through 91%Last sync 12s ago

Validated today

2,104

Duplicates caught

7

$131k prevented

Off-contract

12

Human confirmations

41

Match results

InvoiceVendorAmountFindingStatus
INV-30911Meridian Consulting$48,000Rate $400/h vs contract $350/hOff-contract
INV-30908Meridian Consulting$48,000Same amount, date, ref as INV-30911Duplicate 0.97
INV-30902Brightline Media$12,300Terms Net 60 vs contract Net 45Terms drift
INV-30899Nova Facilities$8,150All checks passedValidated
INV-30895Halcyon IT$96,400Qty 12 licences vs 10 purchasedQty variance
INV-30890Nova Facilities$8,150Monthly recurring · expectedValidated

Exception queue

Duplicate review7
Contract rate mismatch12
Terms drift9
Low-confidence extraction13

// Problem

The Problem

Duplicate payments and unfavourable payment terms are not exotic failures; they are the ordinary output of a process where invoices are approved faster than they can be checked. A vendor re-sends an invoice with a different reference and it is paid twice. A supplier's invoice quotes thirty days where the contract says sixty, and it is honoured because nobody compared the two. Both are recoverable in principle and almost never recovered in practice, because the discrepancy is found — if it is found — long after the money has moved.

  • Duplicate invoices arrive with different references and clear both times.
  • Payment terms on the invoice are not compared against the purchase order or the vendor record.
  • Approval throughput is the metric, so validation is the step that gets compressed.
  • Discrepancies surface in a later reconciliation, when recovery means asking a supplier for money back.

// Overview

Hub places validation before approval rather than after payment. Invoice data is extracted from ERP systems and PDFs with human-in-the-loop confirmation on anything ambiguous, then cross-validated against the organisation's purchasing data so that what is being billed is checked against what was ordered and received. Duplicate detection runs across the whole invoice population rather than on exact reference matches, with real-time alerts that identify the root cause so the pattern can be stopped rather than the instance corrected. Payment terms are analysed across the invoice, the purchase order and the vendor record, and unfavourable divergences are flagged as free-cash-flow opportunities. Payments that pass every check are approved automatically; anything that does not is flagged for investigation.

// AI System

Why AI

Duplicate detection is where rules visibly fail. The same invoice re-sent under a new reference, with a rounded total and a reformatted line description, is not an exact match to anything — but it is obviously a duplicate to a person reading both. Recognising that requires semantic comparison across documents, which is a model capability. Term comparison is the same shape of problem: payment terms are expressed in prose in the contract, as a code in the ERP, and as a line on the invoice, and reconciling three representations of one commitment means understanding them, not matching them.

// Specs

Specifications

EXTRACTION
ERP and PDF, with human-in-the-loop validation
CROSS-VALIDATION
Invoice content against purchasing data
DUPLICATES
Semantic detection across the population, with root-cause alerting
TERMS
Invoice vs purchase order vs vendor record, divergences flagged
AUTONOMY
Clean invoices auto-approved; discrepancies routed for investigation

// Features

Features

  1. 01Invoice data extracted automatically, with human confirmation retained on ambiguous fields.
  2. 02Billed content cross-validated against what was ordered and what was received.
  3. 03Duplicate invoices detected semantically, not by exact reference match.
  4. 04Real-time alerts that name the root cause, so the pattern is fixed rather than the instance.
  5. 05Payment terms compared across invoice, purchase order and vendor record.
  6. 06Unfavourable term divergences surfaced as free-cash-flow opportunities.

// Architecture

Architecture

VALIDATION FLOW

Runtime · one item, left to right


  1. 01Invoice Intake
  2. 02Extraction + Human Confirmation
  3. 03Cross-Validation & Duplicate DetectionPurchasing DataPrior InvoicesVendor RecordPayment Terms
  4. 04Discrepancy Routing
  5. 05Approval Decision
  6. 06Payment

dashed = the inference step, where the system exercises judgment

System stack

Data in · decisions out

01

Sources

Invoices and what they should agree with

Invoice intakePDF, email, portalERP purchasing dataPrior invoices24-month windowContracts & rate cardsPDFVendor master

02

Ingestion

Extract, then confirm

Field extractionwith confidence per fieldHuman confirmationlow-confidence fields onlyContract clause parsingVendor normalisation

03

Ontology

Invoice in context

InvoiceContract · RateVendorPrior invoiceFinding

04AI

Intelligence

Cross-validate before anyone approves

Duplicate detectorfuzzy similarity, not exact matchContract cross-validationrates, terms, scopeAnomaly scoringvs vendor historyFinding explainerLLM · plain languageEval suitefalse-positive rate

05Human

Human control

Blocks are decided by people

Approval decisionSide-by-side evidenceConfirmation trailNothing pays on an open flag

06

Actions

Written back

ERP block / releaseVendor disputeControl report

Observability

Every model call traced; evals run on real cases, not anecdotes.

Governance

Entitlements enforced at retrieval; rules versioned by the organisation.

Write-back

Systems of record are written only through the approval gate.

Validation sits before approval; nothing reaches a payment run on an unresolved flag.

// Impact

Impact

Pre-payment
Discrepancy detection, against later recoverydesign intent
Semantic
Duplicate matching, against exact-reference matchingdesign intent

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// End of case studyHub for Automated Invoice Validation