Home/Services/Document AI

Automate · Pillar 03

Document AI that reads the paperwork so your team does not.

Invoices, purchase orders, delivery notes, certificates, timesheets. They arrive as PDFs, scans and photographs, and somebody types their contents into a system. That has stopped being necessary.

What is document AI?

Document AI, also called intelligent document processing, is the automated reading of business documents to extract structured data — supplier, date, line items, totals, references — from PDFs, scans and photographs. Modern systems handle layouts they have not seen before, score their own confidence, and send anything uncertain to a person rather than guessing.

  • Works on unseen layouts, not just templates it was trained on.
  • Every field carries a confidence score; low confidence goes to review.
  • Validated against your own data before anything is posted.

Why it matters

Data entry is the last fully manual step.

Most businesses have automated almost everything except the bit at the front where a document becomes data. Purchase invoices are the classic case: they arrive from hundreds of suppliers in hundreds of layouts, and someone reads each one and types it into the finance system, then matches it to a purchase order and a delivery note by eye.

Template-based scanning never solved this because the templates break whenever a supplier changes their invoice. What has changed is that document AI now reads layouts it has never seen, which makes the long tail of suppliers viable to automate for the first time.

Where it pays back fastest

Why templates failed

These document types have the clearest return, because the volume is high and the extraction is checkable against data you already hold:

  • Purchase invoices are keyed into the finance system by hand.
  • Three-way matching of PO, delivery note and invoice is done by eye.
  • Delivery notes and PODs are scanned and filed, then never found again.
  • Supplier certificates are chased, received and filed manually.
  • Month end is delayed by a backlog of unprocessed paperwork.
  • Early-payment discounts are missed because approval takes too long.

Scope

What document AI covers.

Extraction is the easy half. Validation, the review queue and the posting rules are what make it trustworthy enough to leave running.

  1. Capture from everywhere

    Email attachments, scanner output, a folder, a supplier portal or a photo from a driver’s phone, all into one pipeline with the original always retained.

  2. Extraction & classification

    Document type identified, then fields and line items extracted — including from layouts the system has never seen before.

  3. Validation against your data

    Supplier matched to your ledger, PO matched to your orders, totals recalculated, VAT checked, duplicates detected. Extraction is only trusted once it reconciles.

  4. Confidence-scored review

    Anything below threshold goes to a review queue showing the document and the proposed data side by side. Corrections improve subsequent accuracy.

  5. Posting & approval

    Clean documents posted into finance or your ERP automatically; exceptions routed for approval with the document attached rather than referenced.

  6. Archive & retrieval

    Every original stored, indexed by its extracted data and linked to the transaction, so the certificate from two years ago is found in seconds.

Deliverables

What it changes in practice.

Accuracy is measured against your own documents during a pilot, before any commitment, because a generic accuracy claim is worthless.

  1. Keystrokes eliminated

    The typing step disappears for the large majority of documents, with the remainder arriving at a reviewer as a confirmation rather than a transcription task.

  2. Matching done by the machine

    Purchase order, delivery note and invoice reconciled automatically, with only genuine discrepancies reaching a person — which is the work that actually needs judgement.

  3. Faster approval, captured discounts

    Documents reaching their approver in minutes rather than days. Early-settlement discounts become achievable, which often funds the project outright.

  4. A findable archive

    Every document indexed by its own contents and linked to the transaction it belongs to. Audit requests and customer certificate chases stop being an afternoon of searching.

Is this the right answer?

When document ai is worth doing — and when it is not.

We would rather lose a project at this stage than six weeks in. If the right-hand column describes you, say so and we will tell you what we would do instead.

Worth doing when

  • Documents arrive in volume and someone types their contents into a system.
  • You can check the extraction against data you already hold.
  • The supplier or document mix is too varied for templates to work.
  • Approval delays are costing you early-settlement discounts.

Probably not when

  • The volume is a few documents a week.
  • There is nothing to validate the extraction against.
  • The documents are handwritten or photographed badly enough that a person struggles.
  • You want it fully automatic with nobody reviewing anything.

How we deliver

How we prove it before you commit.

Nobody should buy document AI on a vendor’s accuracy figure. We run it against your documents first.

  1. Phase one

    Pilot on your documents

    A few hundred of your real documents, including the ugly ones, processed and scored against the correct answers. You get a measured accuracy rate per field before committing to anything.

  2. Phase two

    Validation & review queue

    Matching against your ledgers and orders, confidence thresholds set from the pilot, and the review interface the finance team will use every day.

  3. Phase three

    Posting & integration

    Automatic posting into finance or the ERP for documents that pass every check, with approval routing for those that do not.

  4. Phase four

    Widen & tune

    More document types and suppliers, thresholds adjusted on real performance, and monitoring of accuracy over time so drift is caught.

What you receive

The things that actually land.

Artefacts, not adjectives. Everything below is listed in the scope document before a phase starts, so “done” is a defined state rather than an opinion.

  1. A measured accuracy report

    Several hundred of your own documents processed and scored field by field against the correct answers. Your supplier mix, not a vendor benchmark.

  2. A capture pipeline

    Email, scanner, folder, portal or driver photo into one flow, with the original always retained and linked.

  3. Validation against your own data

    Supplier matched to your ledger, PO matched to your orders, totals recalculated, VAT checked, duplicates detected.

  4. A review queue

    Document and proposed data side by side, with confidence thresholds you set. Corrections feed back into accuracy.

  5. Posting into finance or the ERP

    Clean documents posted automatically; exceptions routed for approval with the document attached rather than referenced.

  6. An indexed archive

    Every original stored and searchable by its own extracted contents, linked to the transaction it belongs to.

Golden Triangle

Document load in this corridor.

Freight and manufacturing generate paper per movement and per batch. That is precisely the profile document AI is built for.

  1. Paper per pallet Delivery documentation Every movement through this corridor produces a delivery note, a POD and often a weighbridge ticket. At volume, automating that capture is transformative rather than incremental.
  2. Supply chain certificates Compliance per batch Food, automotive and pharmaceutical suppliers here must hold certificates of conformity and test reports per batch. Extracting and indexing them makes an audit a search rather than a project.
  3. Long supplier tails Hundreds of layouts Distributors and contractors in the region typically buy from hundreds of suppliers. That long tail is exactly what template-based scanning could never handle and modern document AI can.

We implement document AI for finance, purchasing and quality teams across Birmingham, Leicester, Northampton, Nottingham, Derby and Coventry.

Technology

Document AI technology.

Model choice follows the measured accuracy on your documents. We are not tied to one vendor and will change if the pilot says so.

  • Azure Document Intelligence
  • AWS Textract
  • Large language models
  • Layout-aware extraction
  • Validation rules engine
  • Document store
  • Sage / Xero posting
  • ERP posting
  • Review interface
  • Accuracy monitoring

Questions

Document AI, answered plainly.

Mostly asked by finance directors who have been sold OCR before.

How accurate is document AI on real invoices?

On typical purchase invoices, well-implemented extraction reaches high accuracy on header fields and somewhat lower on line items, which is why confidence scoring and a review queue matter more than the headline figure. We refuse to quote a number before the pilot: we run several hundred of your own documents, score each field against the correct answer, and give you the measured rate for your supplier mix.

Is this different from the OCR we tried before?

Materially, yes. Older OCR relied on templates mapped to each supplier’s layout and broke whenever one changed, which is why most implementations quietly died. Layout-aware models read documents they have never seen by understanding structure and context, so the long tail of suppliers becomes viable rather than being the part you still do by hand.

Does a person still need to check the documents?

For the ones the system is not confident about, and that is by design. Every field gets a confidence score, anything below your threshold goes to a review queue, and nothing posts unless it also reconciles against your ledger and orders. You set how cautious it is, and we start cautious and relax it on evidence.

What document types can you process?

Purchase and sales invoices, purchase orders, delivery notes and PODs, certificates of conformity, test reports, timesheets, remittance advices and application forms. The practical requirement is a reasonably consistent set of fields and a way to validate the extraction against data you already hold.

Will our data be sent to a third-party AI provider?

Only if you agree to it, and the pipeline is designed around whatever constraint you set. Documents can be processed in your own cloud tenancy in a chosen region, with contractual terms preventing the use of your data for model training. For genuinely sensitive material we can keep processing entirely within your environment.

How much does document AI cost to run?

There is a build cost for the pipeline, validation and review interface, then a small per-document processing cost. For most mid-sized finance teams the running cost is a fraction of the labour it replaces, and the build is usually justified by early-payment discounts and faster month end alone.

What accuracy should we expect before we commit?

We will not quote one, and we would be wary of anyone who does. The pilot runs several hundred of your own documents and scores each field, which gives you a real number for your supplier mix. Header fields typically do better than line items, which is exactly why confidence scoring and a review queue matter more than the headline figure.

How does this handle a supplier changing their invoice layout?

It should not notice. Layout-aware models read documents by structure and context rather than by a mapped template, which is the main thing that has changed since template-based OCR. A supplier redesigning their invoice was what used to break these systems and is the single biggest reason older implementations were abandoned.

Can it handle purchase order matching?

Yes, and it is usually where most of the value is. Three-way matching between purchase order, delivery note and invoice is rules work once the data is extracted reliably, and it is the part currently done by eye. Only genuine discrepancies then reach a person, which is the work that actually needs judgement.

What does it cost per document?

There is a build cost for the pipeline, validation and review interface, then a small per-document processing cost — typically pennies rather than pounds at any reasonable volume. For most finance teams the running cost is a fraction of the labour it replaces, and early-payment discounts alone often cover the build.

Related services

Often part of the same project.

  1. Automate

    Workflow Automation

    The rules-based work that eats a week, handed to software that does not forget.

    Explore
  2. Automate

    Data Pipelines

    Data moved, cleaned and reconciled on a schedule, so reporting has one source.

    Explore
  3. Connect

    ERP Integration

    ERP connected to everything around it, without touching the core.

    Explore

All 19 GTX Digital services

Next step

Send us two hundred of your worst documents.

We will process them, score the extraction field by field against the correct answers, and give you a measured accuracy rate for your own supplier mix before you commit to anything.