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SERVICE · 06 / INVOICE DIGITIZATION & AUDIT

From paper invoices
to audit-ready data.
In minutes, not weeks.

AI-powered extraction for invoices, POs, GRNs, and expense receipts — paired with a continuous audit engine that flags duplicates, three-way-match breaks, GST/VAT errors, and policy violations before they hit the ledger. Human-in-the-loop for the edge cases. A full audit trail for everything else.

Stack OCR + LLM 3-WAY MATCH SAP · D365 · ORACLE POWER AUTOMATE AUDIT TRAIL
EXTRACTION · 99.2% FIELD ACCURACY
3-WAY MATCH // PASSED
AUDIT · IMMUTABLE LOG
INBOX · INVOICES PROCESSED
EXTRACTION · FIELD CONFIDENCE
AUDIT · EXCEPTIONS CAUGHT
99.2%
STRAIGHT-THROUGH · POSTED
SOURCES · ROUTED
3-WAY MATCH PO · GRN · INVOICE
MATCHED · BLOCKED
LLM // ORCHESTRATE
WHY NOW · 01

Invoices still arrive as PDFs.
Auditors still ask why.

Most AP teams are still keying invoices, chasing approvals over email, and reconciling exceptions in spreadsheets. Then the audit hits and someone spends a quarter pulling samples by hand. There's a better way — and it's been production-ready for a while.

"

Manual entry, manual errors

Clerks key 30–60 invoices a day. Typos in tax codes, GL accounts, and PO numbers cascade into reconciliations and month-end pain. Every error is a small fire.

"

Duplicates and leakage

The same vendor invoice arrives by email, by post, and again on a statement. Without a deterministic dedupe layer, 1–3% of spend leaks out as duplicate or fraudulent payments.

"

Audits that take a quarter

Sample-based audits, paper trails in shared drives, no way to prove a control was applied to a specific invoice on a specific day. Continuous audit fixes this — and saves the close.

CAPABILITIES · 02

Eight things the platform actually does.

An end-to-end stack — from inbox to ledger to auditor — with a human-in-the-loop queue for the edge cases and an immutable audit trail for everything that flows through.

/01 — CAPTURE

Multi-channel intake

Email, EDI, vendor portal upload, scan-to-folder, mobile capture. Every invoice, PO, and GRN lands in one queue with provenance and timestamp.

/02 — EXTRACTION

OCR + LLM field extraction

Header and line-item fields pulled with confidence scores. Tables, GST/VAT, multi-currency, multi-language. Re-trains on your formats over time.

/03 — MATCH

Two- & three-way match

Auto-match invoice to PO and GRN with tolerance bands. Mismatches routed to the right approver with a one-click resolution path.

/04 — AUDIT ENGINE

Continuous controls

Rules for duplicates, split invoices, round-tripping, off-policy spend, vendor master anomalies. Runs on every invoice — not on a sample.

/05 — REVIEW

Human-in-the-loop queue

Low-confidence fields and audit exceptions surface in a clean review UI. Side-by-side document + extracted data, keyboard-first, audit-logged.

/06 — POSTING

ERP-native posting

Straight-through posting to SAP, D365 F&O / BC, Oracle, NetSuite, Tally, and COSTAR. GL coding from rules + ML; never overrides your master data.

/07 — ANALYTICS

AP & spend analytics

Cycle time, exception rates, vendor performance, early-pay discount capture, duplicate-payment recovery — surfaced in Power BI on day one.

/08 — EVIDENCE

Audit-ready evidence pack

Every invoice, every control, every approval — immutable, tamper-evident, exportable. The auditor's sample becomes a one-click query.

FLOW · 03

From inbox to posting.

Invoices in any format on the left. A clean ledger entry on the right. Every step logged, every approval configurable, every exception caught.

PDF uploadportal · drag-drop
Email inboxap@ · auto-fetch
/02 — OCR
Read & classify

Layout-aware OCR + LLM read every page. Document type detected automatically.

PDFSCANXML
/03 — DIGITIZE
Extract fields

Header + line items, with confidence scores per field. Vendor lookup against ERP master.

99.2% CONFLINE-ITEMS
/04 — VALIDATE
Match & audit

2- or 3-way match · dedupe · tax check · policy rules. Pass → straight-through. Fail → review.

PO·GRNDEDUPEGST
/05 — POST
Approve & post

Multi-level approval (below) → ERP posting → immutable evidence pack.

SAPD365COSTAR

Multi-level approval workflow — example chain.

Fully configurable · per entity · per category
AP
AP Clerk
Auto-assign Validates extracted data · attaches PO/GRN evidence
DM
Dept. Manager
≤ $5,000 Cost-centre owner · single approval · 24-hr SLA
FC
Finance Controller
$5K – $50K Budget check · GL re-coding rights
PARALLEL
TX
Tax / Legal
If flagged Triggered by tax-anomaly or contract clauses
CF
CFO
> $50,000 Capex / sensitive vendors · digital signature
ERP Posting
Auto Straight-through to ledger · evidence pack sealed
RoutingHierarchical · parallel · round-robin
TriggersAmount · GL · vendor · category · risk score
SLAsPer step · auto-escalation · delegate on leave
ChannelsTeams · email · mobile · web
PROCESS · 04

From kickoff to go-live in eight weeks.

We start with one entity, one ERP, one inbox — and ship straight-through processing for the bulk of your invoices in two months. Hard cases get the review queue while the model learns them.

/01 · WEEK 1

Discover

Volume, formats, vendor mix, ERP, current pain. Pull a 90-day invoice sample. Define the audit ruleset and approval matrix in writing.

/02 · WEEK 2–3

Train

Tune extraction on your top vendor templates. Configure tolerance bands. Wire ERP master data — vendors, GL, tax codes, cost centres.

/03 · WEEK 4–5

Integrate

Inbox capture live. Audit rules running shadow-mode. Approval routing in Teams or email. ERP posting tested in sandbox.

/04 · WEEK 6–7

Pilot

One business unit goes live. Measure straight-through rate, exception mix, cycle time. Tune rules and routing in real-time.

/05 · WEEK 8+

Scale

Roll to remaining BUs and entities. Hand over the runbook, the audit dashboard, and the review-queue ownership. We stay on call.

OUTCOMES · 05

What changes when AP runs itself.

Outcomes worth aiming for from a focused invoice automation engagement. Magnitudes vary by volume, vendor mix, and ERP; we'll baseline yours in week one.

70–85% straight-through processing

Most invoices flow inbox-to-ledger with no human touch. Clerks shift from keying to handling exceptions — the work that actually needs judgment.

AUTOMATION
Cycle time from days to hours

Same-day capture, same-day match, same-week approval. Early-payment discounts become capturable instead of theoretical.

SPEED
Duplicate & leakage recovery

Deterministic dedupe across channels and entities. Most clients recover real money in the first quarter — invoices that would have been paid twice.

RECOVERY
Continuous audit, not sample audit

Every invoice tested against every control. The auditor's sample becomes a saved query. Internal audit gets time back; external audit gets faster.

ASSURANCE
An AP team that scales without headcount

Volume can double without doubling the team. The platform absorbs the growth; the people focus on vendor relationships and exceptions.

LEVERAGE
STARTER ENGAGEMENT

AP Automate & Audit.

An eight-week engagement: one entity, one ERP, one inbox — live with straight-through processing, continuous audit, and an evidence pack your auditor will actually accept.

DiscoveryVolume, vendor mix, audit ruleset
ExtractionOCR + LLM · tuned to your templates
Match & audit2-/3-way · dedupe · policy rules
ERP postingSAP · D365 · Oracle · NetSuite · COSTAR
Evidence packImmutable trail · auditor view

Engagements scoped per entity / volume tier. Fixed-price options available for the pilot; per-document pricing for ongoing operations.

Scope this for us → Other services
FAQ · 06

Common questions.

The questions we get most often during scoping calls. If yours isn't here, write to info@arkimetrix.com.

Will this work with our ERP?

Yes — we have production integrations with SAP (ECC and S/4HANA), Microsoft Dynamics 365 F&O and BC, Oracle EBS / Fusion, NetSuite, Tally, and COSTAR Shop Management. Posting respects your master data and approval matrix; we don't bypass controls, we automate them. For ERPs we haven't seen, we connect via API, IDoc, or a flat-file drop — your call.

What accuracy can we expect on extraction?

On structured templates (top vendors, recurring invoices) field accuracy lands in the high-90s out of the gate; on the long tail it's 85–95% with confidence scores that route low-confidence fields to the review queue. The system improves with every correction — by month three, the long tail catches up.

What about our data — does it leave our tenant?

Only if you want it to. Three deployment patterns, your call: (1) managed cloud — documents and extraction inside your Azure / AWS tenant; (2) on-prem — the entire stack (OCR, LLM, audit engine, evidence store) runs inside your data centre, air-gapped if needed; (3) Arkimetrix secure hosting — dedicated tenant on our SOC 2-aligned infrastructure. DPAs, retention policies, and data-flow diagrams in every pattern.

How does the audit engine actually work?

Every invoice runs against a configurable rule library: duplicate detection (header + line + fuzzy), three-way match with tolerance bands, vendor master anomalies, tax/GST validation, off-policy spend, round-tripping, split-invoice patterns, and Benford-style anomaly checks on amounts. Failures route to the review queue with the rule, the evidence, and the recommended action attached. Every run is logged immutably.

Can you work alongside our AP and internal-audit teams?

Yes — most of our engagements are co-builds. AP owns the exception queue and routing rules; internal audit owns the audit ruleset; we bring the platform, the integrations, and a senior pair for both teams. By go-live, your people own the operations.

Where are you based?

Toronto, Canada and Pune, India. One team, two time zones. Most clients see this as a feature, not a bug — coverage runs nearly around the clock.

NEXT STEP

Ready to make the
AP backlog disappear?

A 30-minute demo with real invoices. Send us a small sample (10–20 PDFs, redacted is fine) and we'll show you extraction accuracy, exception handling, and a working evidence pack on your formats.

info@arkimetrix.com → Schedule a 30-min demo
Practice leadInvoice Digitization & Audit
Typical engagement8 weeks · entity pilot
CoverageAzure DI · OCR · LLM extraction
What you keepPipeline · audit log · ERP posting